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ENERGY METALS LTD Capital/Financing Update 2015

Oct 26, 2015

64845_rns_2015-10-26_4f217fd9-5aa9-435b-b43a-cf3ee2ebe965.pdf

Capital/Financing Update

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ABN 63 111 306 533

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ASX ANNOUNCEMENT

27[th] October 2015

ASX Code - EME

For further information, contact:

Dr Weidong Xiang Energy Metals Limited

Telephone: 61 8 9322 6904 Facsimile: 61 8 9321 5240 Email:[email protected] Level 2, 8 Colin Street West Perth WA 6005

PO Box 1323 West Perth WA 6872

This report and further information are available on Energy Metals’ website at:

www.energymetals.net

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7,456 TONNES U3O8 MAIDEN JORC RESOURCE WALBIRI & SATELLITE DEPOSITS (NT)

HIGHLIGHTS

  • Inferred resources of 7,037 tonnes eU3O8 at 641ppm (200ppm cut-off) obtained for the Walbiri uranium deposit confirming Walbiri as the third largest uranium deposit in Central Australia after Angela and Bigrlyi.

  • Inferred resources of 260 tonnes eU3O8 at 259ppm and 159 tonnes eU3O8 at 321ppm for the Sundberg and Hill One deposits (200ppm cut-off).

  • Uranium potential of the Ngalia Basin (NT) further demonstrated, supporting EME’s strategy of ongoing review of historical deposits in the region.

Significant drill hole intercepts include:

  • 7.5m at 1,098ppm eU3O8 from 187.1m in WPH07

  • 3.0m at 1,740ppm eU3O8 from 139.9m in NGDD18

  • 6.8m at 646ppm eU3O8 from 139.5m in NGRH37A

  • 1.0m at 5,340ppm eU3O8 from 171.7m in WPD15

Energy Metals Limited (ASX: EME) is pleased to advise that uranium resource estimates have been obtained for the historical Walbiri deposit and two satellite deposits, Sundberg and Hill One, located 75km by road from the Bigrlyi Deposit in the Ngalia Basin, Central Australia (Figure 1). The deposits lie on granted tenements EL24463, ELR45 and EL30145.

The Walbiri Range area was recognised as prospective for sandstone-hosted uranium following the discovery of outcropping carnotite mineralisation by Central Pacific Minerals (CPM) in late 1971. Subsequent exploration work, including the drilling of 57 exploration holes, was carried out by CPM in the period 1972 to 1976. EME acquired CPM’s interest in the project in 2005, including all the historical exploration records which are now held in EME’s archives.

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The Ngalia Basin, which is some 12,600 km[2] in size, is recognised as one of the Northern Territory’s significant and most prospective uranium provinces (JSU Ngalia Basin Uranium Mineral System Project, Northern Territory Geological Survey, Record 2012-003) . In 2014, EME began a program of systematic documentation and evaluation of historical uranium deposits and prospects located on its Ngalia Basin tenure. Because of the thoroughly and meticulously kept CPM exploration records for Walbiri and adjacent satellite deposits, it was recognised that these data would be of sufficient quality to proceed with JORC-compliant resource estimation provided geological criteria such as continuity of mineralisation and appropriate drill hole density could be demonstrated. A review by EME’s resource consultants CSA Global Ltd confirmed that appropriate criteria were met for Walbiri and its satellite deposits, and EME elected to proceed with the resource estimation.

The latest available historical resource estimate for the Walbiri deposit (non-JORC) was undertaken by the Australian Mineral Development Laboratories (AMDEL) in November 1976 using chemical assay data and employing geostatistical constraints. An estimate of 4,789 tonnes U3O8 was obtained for an average grade of 1,140 ppm U3O8 (cut-off grade not specified). An earlier, widely quoted historical “resource” for the Walbiri deposit of 690 tonnes U3O8 at a grade of 1,620 ppm was actually derived from a preliminary resource calculation for a single lens of mineralisation of 743m length and 113m width using a 1,000 ppm cut-off grade. Although this estimated tonnage is not indicative of the deposit as a whole, the estimate has been variously quoted as such over the intervening 40 years giving the impression that Walbiri was not a uranium deposit of significance.

Exploration Results

Walbiri and its satellite deposits are a tabular, sandstone-hosted, uranium-vanadium style of deposit similar to the nearby Bigrlyi deposit. Mineralisation is hosted in the Mt Eclipse sandstone which is comprised dominantly of arkose, sub-arkosic sandstone and shale deposited in an ancient fluvial channel and alluvial fan system. Mineralisation is stratiform in nature and occurs within a number of semi-continuous lenses confined by shale bands; the dominant lens occurs immediately above a shale marker band termed the ‘C-shale’. Mineralisation is hosted in reduced, grey-green coloured, pyrite-bearing rocks typically near the interface with oxidised mottled or red-coloured rock units. Uranium tends to be variably distributed along strike and at depth probably due to both primary depositional features, including the abundance of detrital clay clasts and channel morphology, and the effects of later uranium remobilisation.

The dimensions of the main Walbiri mineralised domain are approximately 3.6 km along strike with an average plan width of 300 m and maximum modelled plan width of 1,100 m. The total combined strike length of the Walbiri deposit and its two satellite deposits (Sundberg and Hill One) is 8.7 km. Stratigraphy and mineralisation dips between 10° and 18° to the SW and the width of the mineralised interval varies from 0.2m to 7.5m, averaging 1.3m thickness. Mineralisation extends from surface and plunges toward the SE with the deepest drill intercept being 230m below surface. Drill hole collar locations and other drilling details are provided in Annexure 1.

Uraninite and coffinite are the dominant uranium minerals in the sub-surface and they occur in close association with pyrite, ferroselite, and detrital-origin phyllosilicate minerals including biotite, clays and chromium-bearing chlorite. Walbiri and the satellite deposits are characterised by low levels of carbonate cement.

All CPM’s drill holes were logged open-hole, by independent geophysical contractors, using downhole gamma probe tools (for further details see the comments with regard to JORC reporting

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below). The downhole gamma probe was used as the primary analytical tool to measure eU3O8 grade. Drill core samples were assayed for uranium, however, these data are not considered to be sufficiently robust nor representative to be used in the resource estimation. Historically a number of samples were assayed to determine the extent of possible radiometric disequilibrium; although the data are somewhat variable it was concluded that significantly mineralised zones are most likely in equilibrium. This view is supported by a comparison of assay and gamma log U3O8 data, and therefore application of a disequilibrium correction is not considered to be warranted at this stage (i.e. radioactive equilibrium factor or REF has been assigned a value of 1).

Drill hole information and gamma log data for all drill holes, including associated metadata and probe calibration records, were compiled from EME’s archives. Historical gamma logs were archived as a compilation of analogue printouts on paper charts; these were scanned at high resolution, digitised and converted to counts per second (cps) data at 10cm intervals downhole. Using the calibration data and hole information the cps data were reprocessed to yield deconvolved eU3O8 values according to well established methods. Significant intercepts (minimum width 0.3m, maximum internal dilution 0.3m, cut-off grade 100ppm eU3O8, and grade x thickness value >100) are detailed in Annexure 2. All relevant drilling data, gamma logging data and geological data including lithological logs have been converted to digital format, verified and loaded into EME’s database (a summary of the information is provided in Table 1 below).

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Figure 1. Map showing the location of the Walbiri deposit and the Sundberg and Hill One satellite deposits in relation to the Ngalia Basin (in green), EME tenement boundaries and various deposits and prospects (significant deposits on EME tenure are identified).

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Table 1. Database Summary used in the Resource Estimation

Category Total
Number of drill holes 66*
Total metres drilled 10,018.71
Number of downhole surveyrecords 66
Number ofgamma logged intervals(at 10 cm) 79,505
Number of mineralised intervals based on 10 cm
gamma-logging
94
Number of assays 395
Number of assays used for REF estimatepurposes 58
Number of intervals with lithological data 4,573

*57 CPM drill holes and 9 Alcoa drill holes. The latter holes, drilled mainly to the west of Sundberg, do not have available gamma logs and were used to constrain lithological continuity and the extent of mineralisation only.

Land tenure

Just over one half of the Walbiri deposit and most of the Sundberg and Hill One satellite deposits are located within granted tenement EL24463, which is 100% EME owned. The remainder of the Walbiri deposit and a portion of the Hill One deposit are located on granted joint venture tenement ELR45, which is a joint venture between EME (41.9%) and Paladin Energy Ltd (PDN: 58.1%) with EME as the operator of the joint venture. About one third of the Sundberg deposit is located on granted tenement EL30145 which is a joint venture between EME (53.3%), Paladin Energy Ltd (PDN: 41.7%) and Southern Cross Exploration (SXX: 5%) with EME as the operator of the joint venture.

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Figure 2. Map showing the location of Walbiri, Sundberg and Hill One deposits in relation to tenement boundaries (green), outcropping sandstone (grey), surface mineralisation (red lines), bedding planes and syncline/anticline axes. Northern boundary of Ngalia Basin (dot-dash line) and drainages (blue) are shown.

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The deposits are all located on the Mt Doreen pastoral lease over which a Native Title claim was determined by consent in 2013. Currently, resource areas of the Walbiri, Sundberg and Hill One deposits are affected by Aboriginal heritage zones which restrict access and limit ground disturbing activities within the area.

Resource Estimation Procedure

Mineralised envelopes at a 100ppm eU3O8 cut-off grade were interpreted and wireframed (Figures 3 & 4). The wireframes were constrained by surface outcrops and constructed on the basis of a sectional interpretation in which the boundaries were extrapolated to half the nominal section spacing beyond the extents of current drilling. For profiles containing only one drill hole, an average bedding dip was assumed. Using the digital lithological logs, digital models were also generated for the three shale horizons (A, B & C-shales) which bound internal sandstone sub-units (Figure 3).

The downhole eU3O8 data were composited over mineralised intervals using the following parameters: minimum thickness 0.3m, 100ppm eU3O8 cut-off grade, 0.3m maximum width of internal waste, no external dilution, and minimum grade-thickness of 30 ppm · m. A REF value of 1 was applied (U3O8/eU3O8 = 1) and statistical and geostatistical analyses were then performed. The block model was created and filled following application of a coordinate transformation to provide a constant orientation of mineralisation for interpolation purposes. Because the distribution of uranium grades consists of several populations the Multiple Indicator Kriging (MIK) method was used for interpolation of grades in the block model. The dimensions of the parent blocks were set at 10х10х0.5 m with sub-celling applied at the boundaries of the model. An average bulk density of 2.56 t/m[3] , as measured from Walbiri core samples held in EME’s core facility, was used. The distribution of U3O8 grade x thickness values obtained is shown in Figure 5 and the resulting resource estimate, which is classified as inferred, is provided in Annexure 3 for various cut-off grades as well as splits for both deposit and joint venture interest.

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Figure 3. A SW-NE cross-section through the Walbiri Deposit showing wireframe models of lithological domains (brown: A-shale; blue: B-shale and green: C-shale) and mineralised bodies (red). Topographic surface and drill hole traces also shown.

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Figure 4. Wireframe models of the mineralised bodies. Outcropping mineralisation shown in red.

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Figure 5. Distribution of U3O8 grade x thickness (GT) for the Walbiri and satellite deposits.

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Summary

The Mineral Resources are summarised in Table 2 for a 200ppm U3O8 cut-off grade:

Table 2: Estimate of Mineral Resources for the Walbiri and Satellite Deposits (Ngalia Basin)

Category Deposit Volume
'000 m3
Tonnes
'000 t
Grade Grade Mineral Resources Mineral Resources
U3O8
ppm
U
%
U3O8
Mlb
U3O8
tonnes
Inferred Hill One 192 494 321 0.027 0.350 159
Inferred Walbiri 4,274 10,983 641 0.054 15.514 7,037
Inferred Sundberg 391 1,005 259 0.022 0.574 260
Inferred Total 4,857 12,482 597 0.051 16.438 7,456

Notes:

1. The Mineral Resources are for a 100% interest in the associated joint ventures and not the Mineral Resources attributable to the individual joint venture partners.

2. Mineral Resources are based on 200 ppm cut-off grade per resource block.

3. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.

4. Mineral Resources are based on JORC-2012 definitions.

5. Mineral Resources are based on a bulk density of 2.56 t/m[3] .

6. Rows and columns may not add up exactly due to rounding.

The Mineral Resources have been classified and reported in accordance with JORC (2012) requirements. The resource classification is based on the assessed level of confidence in sample methods used, geological interpretation, drill spacing and geostatistical measures.

With the mineral resources defined here, the Walbiri deposit is confirmed as the third largest uranium deposit in the southern Northern Territory after Angela and Bigrlyi, and is the second largest deposit in the Ngalia Basin (Table 3). These results affirm the standing of the Ngalia Basin as one of Australia’s significant uranium provinces.

Table 3: Mineral Resources of the three largest uranium deposits in the Alice Springs region

Deposit Basin Energy
Metals’
Interest
(%)
No.
Resource
Drill Holes
Cut-Off
U3O8 Grade
(ppm)
Average
U3O8 Grade
(ppm)
U3O8
tonnes
Angela1 Amadeus 0 794 300 1,310 13,980
Bigrlyi Ngalia 53.3 1,057 250 818 12,230
Walbiri Ngalia 73.4 47 200 641 7,037

1 Paladin Energy Ltd (100%)

Because the resource is based on a relatively small number of drill holes compared with the other deposits, Energy Metals believes there is considerable scope for expansion of the resource by both in-fill and along strike extensional drilling. In particular, mineralisation is open to the SE and is likely

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to be repeated in folded strata of the Mt Eclipse syncline and anticline to the south of the current resource area. In fact, an Induced Polarisation geophysical survey completed in 2013 has delineated a chargeable unit (i.e. prospective reduced sandstone) in the predicted stratigraphic position for Walbiri mineralisation folded around the southern limb of the Mt Eclipse syncline some 2 km south of the resource area; this represents a prime target for future drill testing.

Due to the proximity of the Walbiri and Bigrlyi deposits (Figure 1), EME considers that a combined future mining development would have a positive impact on project economics through both shared capital costs and increased project mine life. Although mineralisation at Walbiri is known to have certain favourable metallurgical characteristics such as low carbonate content, little work has been done on Walbiri since 1976; modern investigations of deposit metallurgy, hydrology, rock properties and uranium series equilibrium, in addition to drill test work, will be required to advance the project in the medium term. Energy Metals remains committed to its strategy of data compilation, resource evaluation and drill testing of historical uranium deposits on its Ngalia Basin tenure.

For and on behalf of the Board.

Weidong Xiang Managing Director 27[th] October 2015

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Competent Persons Statement

The information in this report that relates to Mineral Resource estimation is based on information compiled by Mr Dmitry Pertel, Principal Consultant Geologist, CSA Global Ltd and Dr Maxim Seredkin, Principal Consultant Geologist, CSA Global Ltd. Information in this report relating to the interpretation and determination of gamma probe results is based on information compiled by Mr Evgeny Sirotenko, consultant geophysicist, under supervision of Dr Maxim Seredkin, Principal Consultant Geologist, CSA Global Ltd. Mr Pertel is a member of the Australian Institute of Geoscientists (MAIG) and is an employee of CSA Global. Dr Seredkin is a Fellow of the Australasian Institute of Mining and Metallurgy (FAusIMM), a member of the Australian Institute of Geoscientists (MAIG), and is an employee of CSA Global. Mr Pertel and Dr Seredkin have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as Competent Persons as defined by the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves – The JORC Code (2012)”, and Mr Pertel and Dr Seredkin both consent to the inclusion in this report of the matters based on the information in the form and context in which it appears.

Information in this report relating to exploration results, data, cut-off grades and QAQC analysis is based on information compiled by Dr Wayne Taylor and Mr Lindsay Dudfield. Mr Dudfield is a member of the AusIMM and the AIG. Dr Taylor is a member of the AIG and is a full time employee of Energy Metals; Mr Dudfield is a consultant to Energy Metals. They both have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as a Competent Person as defined in the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves – The JORC Code (2012)”. Dr Taylor and Mr Dudfield both consent to the inclusion of the information in the report in the form and context in which it appears.

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Annexure 1. Collar coordinates for historical drilling at the Walbiri deposit and satellite deposits, GDA94 datum, Zone 52.

HOLE
NUMBER
DEPOSIT EASTING
(m)
NORTHING
(m)
ELEV-
ATION(m)
DRILL
TYPE*
DIP
(deg-
rees)
TRUE
AZI-
MUTH
(deg-
rees)
TOTAL
DEPTH
(m)
Hole
Completion
Date
NGDD07 Walbiri 765595 7531202 718.2 DD -90 5 53.63 20/09/1972
NGDD08 Walbiri 765659 7531123 705.8 DD -90 5 64.64 29/09/1972
NGDD09 Walbiri 765501 7531296 731.2 DD -90 5 55.8 1/10/1972
NGDD10 Walbiri 765031 7531324 725.4 DD -90 5 91.44 5/10/1972
NGDD11 Walbiri 765483 7531140 738.7 DD -90 5 104.24 10/10/1972
NGDD12 Walbiri 765173 7530807 671.5 DD -90 5 216.4 24/10/1972
NGDD13 Walbiri 765678 7530779 669.5 DD -90 5 100.89 11/11/1972
NGDD14 Walbiri 766184 7530745 729.9 DD -90 5 100.58 17/11/1972
NGDD15 Walbiri 764900 7531580 772.1 DD -90 5 102.7 27/11/1972
NGDD17 Walbiri 765439 7530624 666.2 DD -90 5 165.2 1/12/1972
NGDD18 Walbiri 765926 7530411 678.7 DD -90 5 165.2 10/12/1972
NGDD19 Walbiri 764699 7531199 707.9 DD -90 5 170.7 20/12/1972
NGRH01 Walbiri 764476 7531588 698.7 PH -90 5 82.6 19/08/1973
NGRH02 Walbiri 764290 7531371 687.6 PH -90 5 109 27/09/1973
NGRH03 Walbiri 766475 7530368 670.9 PH -90 5 26 11/08/1973
NGRH03A Walbiri 766472 7530367 670.8 PH -90 5 97.25 17/08/1973
NGRH04 Walbiri 766287 7530113 663.1 PH -90 5 169 26/08/1973
NGRH05 Walbiri 766975 7530284 710.9 PH -90 5 106 21/09/1973
NGRH11 Walbiri 764189 7531989 776.1 PH -90 5 85 14/10/1973
NGRH12 Walbiri 763713 7532197 757.9 PH -90 5 92 17/10/1973
NGRH36 Walbiri 765793 7530472 673.8 PH -90 5 161 18/11/1973
NGRH37A Walbiri 766139 7530288 676.4 PH -90 5 166 15/11/1973
NGRH38 Walbiri 765214 7531179 697.9 PH -90 5 29 not specified
NGRH50 Walbiri 765457 7530839 681.5 PH -90 5 128 5/11/1973
WPH01 Walbiri 765690 7530220 662.1 PH -90 5 218.5 2/02/1975
WPH02 Walbiri 765865 7530129 660.1 PH -90 5 208.04 13/02/1975
WPH03 Walbiri 765459 7530335 666.5 PH -90 5 216.08 15/03/1975
WPH04 Walbiri 766146 7529989 660.8 PH -90 5 191.83 24/03/1975
WPH05 Walbiri 766196 7529919 662.1 PH -90 5 94 13/03/1975
WPH06 Walbiri 764951 7530395 679.3 PH -90 5 113.04 21/03/1975
WPH07 Walbiri 766359 7529878 664.9 PH -90 5 207.84 26/04/1975
WPH08 Walbiri 766541 7529754 666.5 PH -90 5 212.55 17/09/1975
WPH09 Walbiri 766752 7529606 668.6 PH -90 5 220.7 14/10/1975
WPH10 Walbiri 766218 7529711 663.1 PH -90 5 253 27/10/1975
WPD11 Walbiri 766389 7529664 664.5 PD -90 5 247.42 21/04/1976
WPD12 Walbiri 766507 7529526 663.8 PD -90 5 256.25 29/04/1976
WPD13 Walbiri 766028 7529854 660.4 PD -90 5 259.44 5/05/1976

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WPD14 Walbiri 766103 7530016 660.9 PD -90 5 187.3 11/05/1976
WPD15 Walbiri 766195 7530055 661.7 PD -90 5 187.12 15/05/1976
WPD16 Walbiri 766219 7530382 672.5 PD -90 5 125.75 29/05/1976
WPD17 Walbiri 765833 7530611 684.6 PD -90 5 133.47 1/06/1976
WPD18 Walbiri 766392 7529963 669.5 PD -90 5 189.34 5/06/1976
WPD19 Walbiri 766307 7529798 663.7 PD -90 5 226.92 12/06/1976
WPD20 Walbiri 766279 7529933 663.8 PD -90 5 205.62 18/06/1976
WPD21 Walbiri 766441 7529810 665.1 PD -90 5 208.69 23/06/1976
WPD22 Walbiri 766014 7530157 666.2 PD -90 5 187.57 27/06/1976
WPD23 Walbiri 766694 7530109 674.8 PD -90 5 181.67 2/07/1976
NGRH06 Hill One 767530 7530183 752.6 PH -90 5 144.6 10/11/1973
NGRH07 Hill One 767773 7529851 720.0 PH -90 5 123 9/11/1973
NGRH08 Hill One 768214 7529497 687.5 PH -90 5 151 7/11/1973
NGRH09 Hill One 768545 7529199 662.8 PH -90 5 112 8/11/1973
NGRH10 Hill One 768880 7528801 659.1 PH -90 5 100 11/11/1973
NGRH13 Sundberg 763327 7532516 780.3 PH -90 5 94 21/10/1973
NGRH14 Sundberg 762911 7532637 745.8 PH -90 5 92 23/10/1973
NGRH15 Sundberg 761997 7533148 738.7 PH -90 5 99 25/10/1973
NGRH45 Sundberg 762483 7532891 726.1 PH -90 5 97.5 27/10/1973
NGRH46 Sundberg 761493 7533314 672.2 PH -90 5 105 3/11/1973
MD007 Sundberg 761456 7534413 673.0 PH -60 25 100 4/07/1978
MD008 Sundberg 762153 7534207 679.0 PH -60 205 152 15/07/1978
MD013 Sundberg 760108 7532421 654.1 PH -60 27 200 19/08/1978
MD014 Sundberg 760492 7532535 659.9 PH -60 27 149 21/08/1978
MD015 Sundberg 760951 7533431 671.1 PH -60 40 200 23/08/1978
MD016 Sundberg 761192 7534039 673.0 PH -60 35 200 25/08/1978
MD025 Sundberg 760829 7533106 659.7 PD -60 140 325.2 26/03/1980
MD019 Other 761260 7529206 637.2 PH -90 5 200 2/08/1979
MD020 Other 760035 7529280 636.1 PH -90 5 200 3/08/1979

*PH = Percussion Hole; DD = Diamond Drill Core; PD = Diamond Tail

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Annexure 2. Significant eU3O8 (Deconvolved Gamma Log) intercepts from the Walbiri and satellite deposits based on the criteria: Minimum width 0.3m, maximum internal dilution 0.3m, 100ppm eU3O8 cut-off grade; Grade x Thickness >100. Grade x Thickness (GxT) values >1000 are highlighted in bold italics.

Hole
Number
From
(m)
To
(m)
Width
(m)
eU3O8
(ppm)
G×T
(ppm·m)
NGDD10 45.2 45.8 0.6 324 194
NGDD11 67.6 68.5 0.9 2210 1989
72.0 73.3 1.3 1269 1650
73.9 75.4 1.5 1181 1772
NGDD12 144.1 144.9 0.8 192 154
NGDD13 76.8 77.3 0.5 369 185
NGDD14 82.2 84.1 1.9 150 285
87.0 89.1 2.1 603 1266
89.5 91.0 1.5 372 558
NGDD15 39.3 41.8 2.5 820 2050
82.7 85.3 2.6 644 1674
NGDD18 139.9 142.9 3.0 1740 5220
NGDD07 10.0 16.1 6.1 433 2641
16.9 21.1 4.2 583 2449
22.1 25.1 3.0 198 594
NGRH15 63.5 64.1 0.6 305 183
96.3 96.8 0.5 207 104
68.0 68.6 0.6 201 121
NGRH37A 138.6 139.1 0.5 406 203
139.5 146.3 6.8 646 4393
88.1 88.7 0.6 511 307
NGRH03A 90.0 91.6 1.6 455 728
93.0 95.1 2.1 265 557
NGRH46 48.3 50.8 2.5 202 505
NGRH09 43.7 44.1 0.4 395 158
46.2 46.8 0.6 273 164
WPD11 162.6 163.0 0.4 718 287
200.8 201.3 0.5 339 170
211.2 212.6 1.4 416 582
WPD12 169.1 171.1 2.0 244 488
175.0 175.6 0.6 214 128
225.9 227.5 1.6 678 1085
WPD14 98.8 99.4 0.6 213 128
166.8 170.6 3.8 484 1839
WPD15 144.6 145.1 0.5 296 148
169.0 170.7 1.7 365 621
171.7 172.7 1.0 5340 5340
WPD16 106.8 109.4 2.6 513 1334
WPD18 172.3 174.6 2.3 393 904

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WPD19 199.6 204.0 4.4 523 2301
204.5 204.9 0.4 2554 1022
WPD20 179.8 181.4 1.6 586 938
WPD21 190.3 193.4 3.1 555 1721
WPD22 170.7 171.4 0.7 159 111
172.3 174.0 1.7 904 1537
WPH01 194.2 194.9 0.7 234 164
195.4 200.5 5.1 372 1897
WPH10 215.3 216.3 1.0 485 485
218.1 219.4 1.3 364 473
220.5 221.1 0.6 1825 1095
WPH02 186.5 188.0 1.5 276 414
189.6 192.1 2.5 348 870
193.4 195.9 2.5 835 2088
WPH04 177.0 181.6 4.6 993 4568
182.1 183.1 1.0 353 353
WPH07 187.1 194.6 7.5 1098 8235
WPH08 187.7 190.1 2.4 916 2198
WPH09 124.6 125.7 1.1 251 276
NGDD08 29.6 30.5 0.9 250 225

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Annexure 3. Walbiri deposit and Satellite deposits Resource Report.

Cut-off
U3O8ppm
Volume
‘000 m3
‘000 tonnes Average
Grade U3O8
ppm
U3O8
Mlb
U3O8
tonnes
Hill One Deposit
100% EnergyMetals
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 2 6 550 0.007 4
400 8 19 452 0.019 8
300 81 208 362 0.166 75
200 189 486 323 0.346 157
100 487 1,252 201 0.555 252
0 487 1,252 201 0.555 252
JV Paladin and EnergyMetals(ELR45)
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 0 0 - 0.000 0
400 0 0 - 0.000 0
300 0 0 - 0.000 0
200 3 8 208 0.004 2
100 295 759 122 0.205 93
0 295 759 122 0.205 93
Total,Hill One Deposit
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 2 6 550 0.007 3
400 8 19 452 0.019 9
300 81 208 362 0.166 75
200 192 494 321 0.350 159
100 782 2,011 171 0.759 344
0 782 2,011 171 0.759 344
Walbiri Deposit
100% EnergyMetals
1,000 341 877 1,598 3.090 1402
750 744 1,911 1,167 4.915 2229
500 1,063 2,732 998 6.011 2727
400 1,367 3,512 876 6.786 3078
300 1,886 4,847 730 7.798 3537
200 2,301 5,913 644 8.402 3811
100 3,119 8,015 516 9.119 4136
0 3,330 8,559 486 9.178 4163
JV Paladin and EnergyMetals(ELR45)

14

1,000 284 730 1,920 3.090 1402
750 429 1,102 1,554 3.775 1712
500 750 1,927 1,147 4.872 2210
400 1,014 2,607 965 5.545 2515
300 1,441 3,703 781 6.374 2891
200 1,973 5,070 636 7.112 3226
100 2,310 5,936 565 7.394 3354
0 2,325 5,975 562 7.400 3357
Total,Walbiri Deposit
1,000 625 1,607 1,744 6.180 2803
750 1,172 3,013 1,308 8.691 3942
500 1,813 4,659 1,059 10.883 4936
400 2,381 6,119 914 12.331 5593
300 3,327 8,551 752 14.172 6428
200 4,274 10,983 641 15.514 7037
100 5,428 13,951 537 16.513 7490
0 5,655 14,534 517 16.578 7520
SundbergDeposit
100% EnergyMetals
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 0 0 - 0.000 0
400 3 7 410 0.006 3
300 52 133 322 0.095 43
200 292 750 252 0.416 189
100 550 1,413 203 0.633 287
0 550 1,413 203 0.633 287
JV Paladin,EnergyMetals & Southern Cross(EL30145)
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 0 0 - 0.000 0
400 2 5 410 0.004 2
300 54 139 325 0.100 45
200 99 255 281 0.158 72
100 161 414 246 0.224 102
0 161 414 246 0.224 102
Total,SundbergDeposit
1,000 0 0 - 0.000 0
750 0 0 - 0.000 0
500 0 0 - 0.000 0
400 5 12 410 0.010 5
300 106 273 323 0.194 88
200 391 1,005 259 0.574 260
100 711 1,827 213 0.857 389
0 711 1,827 213 0.857 389

15

Combined Deposits Combined Deposits Combined Deposits Combined Deposits Combined Deposits Combined Deposits
1,000 625 1,607 1,744 6.180 2803
750 1,172 3,013 1,308 8.691 3942
500 1,815 4,665 1,059 10.890 4940
400 2,393 6,150 912 12.361 5607
300 3,514 9,031 730 14.532 6592
200 4,857 12,482 597 16.438 7456
100 6,922 17,789 462 18.130 8224
0 7,149 18,372 449 18.195 8253

Note: All figures in the tables are rounded, and therefore the total sums might not be the direct sum of the input figures

16

The following commentary is provided to ensure compliance with the JORC (2012) requirements for the reporting of Mineral Resource Estimates as discussed above for the Walbiri, Sundberg and Hill One Deposits located on tenements EL24463, ELR45 and EL30145.

Section 1: Sampling Techniques and Data

Criteria JORC Code explanation JORC Code explanation Commentary Commentary
Sampling Nature and quality of sampling (eg cut channels, The primary sampling instrument at the Walbiri and satellite deposits was the
techniques random chips, or specific specialised industry standard downhole gamma tool (or ‘probe’) which was used to obtain a total gamma count
measurement tools appropriate to the minerals under reading down each drill hole. Drilling was by rotary percussion (PH) and diamond
investigation, such as down hole gamma sondes, or core drilling (DD) methods with NE-SW oriented drill lines on 100 - 150 m spacing
handheld XRF instruments, etc). These examples and closer 50 m spacing within the primary mineralised zones. Away from the
should not be taken as limiting the broad meaning of primary zones the spacing varied from 250 m to 500 m. Drill holes were mostly
sampling. vertical to optimally intersect shallow-dipping mineralisation. Original analogue
Include reference to measures taken to ensure sample gamma log data was digitised at 10 cm intervals downhole and converted to
representivity and the appropriate calibration of any standard format LAS files followed by calculation of equivalent U3O8(eU3O8)
measurement tools or systems used. grades (see below for further information on gamma log processing procedures).
Aspects of the determination of mineralisation that are The total count gamma logging method used here is a common method used to
Material to the Public Report. estimate uranium grade where the radiation contribution from thorium and
In cases where ‘industry standard’ work has been done potassium is small (as is the case for sandstone-hosted deposits of the Bigrlyi-
this would be relatively simple (eg ‘reverse circulation type considered here). Gamma radiation is measured from a volume surrounding
drilling was used to obtain 1 m samples from which 3 the drill hole that has a radius of approximately 35 cm. Therefore the gamma
kg was pulverised to produce a 30 g charge for fire probe samples a much larger volume than drill spoil or drill core samples
assay’). In other cases more explanation may be recovered from a drill hole of normal diameter; gamma logging is considered to
required, such as where there is coarse gold that has provide a more representative sample of the mineralised body and is preferred
inherent sampling problems. Unusual commodities or over geochemical assay of drill samples for resource estimation purposes.
mineralisation types (eg submarine nodules) may Estimates of uranium concentration determined from gamma ray measurements
warrant disclosure of detailed information. are based on the commonly accepted initial assumption that the uranium is in
secular equilibrium with its daughter products (radionuclides), which are the
principal gamma ray emitters along the U-series decay chain. If uranium is in
disequilibrium as a result of the redistribution (depletion or enhancement) of
uranium relative to its daughter radionuclides, then the true uranium concentration
in the holes logged using the gamma probe will be higher or lower than those
reported. For the present resource estimation at Walbiri no disequilibrium
correction has been applied, i.e. the Radioactive Equilibrium Factor (REF) =
U3O8/eU3O8has been set to 1 (see below for further explanation). This is consistent
with current knowledge of other Ngalia Basin uranium deposits such as Bigrlyi.
Drilling Drill type (eg core, reverse circulation, open-hole Rotary percussion and diamond drilling methods were used by Central Pacific
hammer, rotary air blast, auger, Bangka, sonic, etc) Minerals(CPM)between theyears 1972 – 1976 and byAlcoa in theperiod 1978 -

17

techniques and details (eg core diameter, triple or standard tube, 1980. The 1972 program primarily consisted of NQ diamond drilling from surface
depth of diamond tails, face-sampling bit or other type, with a reduction in diameter to BQ at depth. The later programs included rotary
whether core is oriented and if so, by what method, percussion pre-collars between 50 - 100m depth with NQ diamond tails and also
etc). pure rotary percussion from surface to target depth. Rotary percussion drilling
used 6 - 6 1/8” tri-cone roller bits and 11 – 12 cm diameter air-hammer. Hole sizes
ranged from 7.6 to 16.5 cm and were primarily cased with NQ and NW casing to
the pre-collar depths.
Drill sample Method of recording and assessing core and chip Drill spoil recovery is not relevant to the sampling method used (i.e. downhole
recovery sample recoveries and results assessed. gamma logging).
Measures taken to maximise sample recovery and Drill core from CPM exploration programs in the period 1972-1976 is archived in
ensure representative nature of the samples. Energy Metals core storage facility and at the NTGS Alice Springs core library.
Whether a relationship exists between sample recovery Core recoveries at the time of drilling were noted by CPM to be better than 94%.
and grade and whether sample bias may have
occurred due to preferential loss/gain of fine/coarse
material.
Logging Whether core and chip samples have been geologically Twenty-two historical diamond core holes were re-logged by EME geologists for
and geotechnically logged to a level of detail to support lithology, colour, grain-size, stratigraphic unit, oxidation state, alteration,
appropriate Mineral Resource estimation, mining cementation, weathering and other features; data was recorded digitally and core
studies and metallurgical studies. was photographed. Scintillometer and Niton portable XRF measurements were
Whether logging is qualitative or quantitative in nature. undertaken at 20 cm intervals through mineralised zones to confirm the width of
Core (or costean, channel, etc) photography. mineralisation. The coded data was verified according to EME’s standard logging
The total length and percentage of the relevant look-up tables. The re-logs were found to be in good agreement with previous
intersections logged. logging records, which provided confidence in the quality of original CPM logging,
and permitted EME to proceed with digitisation of the remaining CPM historical
drill core logs.
Rotary percussion drill chip samples were logged at the time of drilling by CPM
geologists and the hard copy lithological logs were converted to digital format by
EME geologists using EME’s standard codes.

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Sub- If core, whether cut or sawn and whether quarter, half Core was originally split into samples of half core for assay work. Half core was
sampling or all core taken. quartered for duplicate checks. Historically, CPM assayed for uranium and
techniques If non-core, whether riffled, tube sampled, rotary split, vanadium. The assay data were not used for the resource estimation work as they
and sample etc and whether sampled wet or dry. are not considered sufficiently robust nor representative in comparison with the
preparation For all sample types, the nature, quality and gamma logging measurements. However, assay data has been used to evaluate
appropriateness of the sample preparation technique. the Radioactive Equilibrium Factor.
Quality control procedures adopted for all sub-sampling
stages to maximise representivity of samples.
Measures taken to ensure that the sampling is
representative of the in situ material collected, including
for instance results for field duplicate/second-half
sampling.
Whether sample sizes are appropriate to the grain size
of the material being sampled.
Quality of The nature, quality and appropriateness of the The gamma tools used for downhole gamma ray measurements were calibrated
assay data assaying and laboratory procedures used and whether and operated by geophysical contractors Austral United Geophysical (AUG)
and the technique is considered partial or total. during the period 1972 – 1973 then McPhar Geophysics Pty Ltd until 1975 and
laboratory For geophysical tools, spectrometers, handheld XRF after this time by Geoex Pty Ltd of South Australia who acquired the assets of
tests instruments, etc, the parameters used in determining McPhar. Calibration information including k-factors and deadtime corrections and
the analysis including instrument make and model, hole information including hole diameter, casing depths/type and fluid levels/type
reading times, calibrations factors applied and their were recorded for each hole. The accuracy and reproducibility of the probe data
derivation, etc. were monitored using two on-site standard radioactive sources (a low-level and a
Nature of quality control procedures adopted (eg high-level source) and the monitoring data was included on each paper log and
standards, blanks, duplicates, external laboratory deemed satisfactory.
checks) and whether acceptable levels of accuracy (ie In 1972 holes were probed by AUG using a combination tool #326E (S.P.,
lack of bias) and precision have been established. resistivity and gamma); which included a Sodium Iodide (NaI) 1 x ¾ inch detector
crystal. In 1973 AUG switched to a different NaI probe of the same make and size
detector (#223). A primary run was undertaken for each hole and if warranted a
separate run over mineralised intervals was completed. Post-1975, drill holes
were probed with the L1 or lithology gamma probe which employed a sensitive 4 x
1 inch NaI detector crystal. Intervals of significant mineralisation (off-scale on the
L1 probe) were re-probed with the O1 or ‘ore’ gamma probe which employed the
less sensitive 1 x ¾ inch NaI detector crystal. No gamma log data was available
for holes drilled by Alcoa (western margin of the Sundberg prospect).
Approximately 75% of the drill holes (those with a standing water level) were
logged electrically to provide downhole electric potential and resistivity data. This
data has not been digitised or used for resource estimation purposes.
The counts per second (cps) downhole gamma data were recorded on paper
charts with an analogue pen recorder; for some 1975 - 1976 holes (WPH) the cps
data was also recorded in digital printout form for the O1 probe.
Logging parameters includingthe time constant,loggingspeed and chart scale

19

were recorded. Both L1 and O1 paper logs were digitised by EME’s geophysical
contractor and converted into digital standard- format LAS files.
LAS file data were converted to equivalent U3O8values (eU3O8in ppm) using the
specified probe calibration factors and taking into account drill hole size, fluid
levels and other parameters. The eU3O8data was filtered (deconvolved) to correct
for smearing of the gamma signal at mineralised interfaces so that true grades
and thicknesses more closely reproduce actual grade. The eU3O8grades were
calculated by consultant geophysicist Mr Evgeny Sirotenko under the supervision
of Dr Maxim Seredkin using the well-established methodology of Khaikovich and
Shashkin, widely tested and upheld in the evaluation of uranium deposits in
Kazakhstan and the former USSR.
Verification The verification of significant intersections by either LAS files from four holes with significant uranium intersections were independently
of sampling independent or alternative company personnel. reprocessed and deconvolved by consultant geophysicist Mr David Wilson of 3D
and The use of twinned holes. Exploration Pty Ltd. Comparison of eU3O8grade composites between the Wilson
assaying Documentation of primary data, data entry procedures, and Sirotenko datasets indicates that agreement is within 4% which is deemed
data verification, data storage (physical and electronic) satisfactory.
protocols. No twinned holes are available from the historical dataset.
Discuss any adjustment to assay data. Historical data including paper gamma logs, assay certificates and lithological logs
were stored in archive boxes in EME’s library. The data is a complete record of
CPM’s exploration works conducted from 1972 through 1976.
Historically, CPM undertook ‘closed can’ eU3O8and uranium assay measurements
at The Australian Mineral Development Laboratories (AMDEL), Adelaide, on 103 core
samples in order to evaluate possible uranium series disequilibrium and determine a
REF value applicable to the deposit. A scattered distribution with an average
U3O8/eU3O8value of 1.12 +/- 0.36 (1) was obtained, however, AMDEL commented
that “primary ore grade mineralisation was in equilibrium”. As an additional check, a
comparison was made between available chemical assay and gamma log eU3O8data
from 58 separate intervals (this report). Excluding outliers a U3O8/eU3O8value of 0.98
was obtained and with outliers a value of 0.89 was obtained. Because these various
measurements provide no corroborating evidence for a systematic deviation from 1
within statistical error, the REF for resource estimation purposes at Walbiri at this
stage is best assigned a value of 1. This is consistent with the REF used for the
nearby Bigrlyi deposit. However, further detailed investigations and verification of
historical data may in the future lead to refinement of the REF applied at Walbiri.
No adjustments were made to eU3O8assay data other than the standard
reprocessing (deconvolution) discussed above.
Location of Accuracy and quality of surveys used to locate drill Hole collar locations were determined using three independent datasets. The
data points holes (collar and down-hole surveys), trenches, mine primary dataset comprised CPM’s original exploration drill hole plans, which were
workings and other locations used in Mineral Resource scanned at high resolution and carefully georeferenced to allow extraction of hole
estimation. coordinates. The drill collars locations were compared with drill sites identifiable

20

Specification of the grid system used. from high resolution digital aerial photographic images and with the same drill
Quality and adequacy of topographic control. sites converted from CPM’s original local coordinate grid. Agreement between the
three data-sets was found to be excellent and the accuracy of the collar
coordinates is judged to be better than +/-10 m in the horizontal plane.
The coordinates are located on the MGA94 grid, Zone 52 using the GDA94 datum
(refer Annexure 2).
In the vertical plane topographic control was provided by a Digital Elevation Model
(DEM) generated from a high resolution aerial photographic survey flown in 2011.
Accuracy is judged to be at least +/- 0.5 m in the vertical plane.
All CPM holes were drilled vertically and as no surveys were undertaken, were
assumed to have remained vertical to the end of hole. A number of Alcoa drill
holes were angle holes; as no downhole surveys were undertaken the starting dip
and azimuth were assumed until end of hole.
Data Data spacing for reporting of Exploration Results. The Walbiri deposit was drilled on NE-SW panels spaced at 100 - 150 m. Within
spacing and Whether the data spacing and distribution is sufficient strongly mineralised zones infill drilling was conducted on 50 m spaced panels
distribution to establish the degree of geological and grade with 100 – 200 m step-outs (depending on topography and access) to test down
continuity appropriate for the Mineral Resource and dip continuity. Away from the main zone limited down-dip drilling has been
Ore Reserve estimation procedure(s) and completed and the spacing between holes is 450 - 500 m.
classifications applied. EME and CSA Global consider the spacing sufficient to establish continuity of
Whether sample compositing has been applied. geology and grade for the purposes of estimation of an inferred mineral resource.
Downhole gamma logs were digitised at 10 cm intervals and were composited
(refer EME database) for resource reporting purposes.
Orientation Whether the orientation of sampling achieves unbiased Several investigations have shown that Bigrlyi-style (tabular stratiform sandstone-
of data in sampling of possible structures and the extent to which hosted) uranium mineralisation as found at Walbiri exhibit no significant structural
relation to this is known, considering the deposit type. control. Mineralisation is controlled by physical and chemical characteristics of the
geological If the relationship between the drilling orientation and host rock such as permeability and redox state and is influenced by primary
structure the orientation of key mineralised structures is depositional and sedimentological features.
considered to have introduced a sampling bias, this The deposit occurs in shallowly dipping beds and was sampled by vertical drill
should be assessed and reported if material. holes. The downhole gamma probe data was subsequently corrected for
mineralised zone boundary effects by deconvolution. There is therefore no bias of
sampling related to orientation of the mineralised zones.
Sample The measures taken to ensure sample security. Not applicable.
security
Audits or The results of any audits or reviews of sampling No audits or reviews of sampling techniques were undertaken.
reviews techniques and data.

21

Section 2: Reporting of Exploration Results

Criteria JORC Code explanation JORC Code explanation Commentary Commentary
Mineral Type, reference name/number, location and ownership Approx. 54% of the Walbiri deposit and most of the Sundberg and Hill One
tenement and including agreements or material issues with third satellite deposits are located within granted tenement EL24463, which is 100%
land tenure parties such as joint ventures, partnerships, overriding EME owned.
status royalties, native title interests, historical sites, Granted joint venture tenement ELR45 covers 46% of the Walbiri resource which
wilderness or national park and environmental settings. is a joint venture between EME (41.9%) and Paladin Energy Ltd (PDN: 58.1%).
The security of the tenure held at the time of reporting EME is the operator of the joint venture.
along with any known impediments to obtaining a Granted joint venture tenement EL30145 covers 28% of the Sundberg resource
licence to operate in the area. which is a joint venture between EME (53.3%), Paladin Energy Ltd (PDN: 41.7%)
and Southern Cross Exploration (SXX: 5%). EME is the operator of the joint
venture.
A Native Title Claim covering the Mt Doreen pastoral lease on which the Walbiri
and satellite deposits are located, was granted by consent on 2-July-2013. The
Ngalyia Aboriginal Corporation is the relevant Registered Native Title Body
Corporate and holds the native title interests of the traditional owners.
Currently, resource areas of the Walbiri, Sundberg and Hill One deposits are
affected by Aboriginal heritage zones which restrict access and limit ground
disturbing activities within the area.
Exploration Acknowledgment and appraisal of exploration by other All the exploration data reported here is the result of drilling programs undertaken
done by other parties. by CPM over the period 1972 to 1976 and Alcoa over the period 1978 to 1980.
parties EME acquired CPM’s interest in the project in 2005 including all historical data
and archived drill core.
Geology Deposit type, geological setting and style of Walbiri and its satellite deposits are Bigrlyi–style, tabular, stratiform, sandstone-
mineralisation. hosted uranium deposits of Carboniferous age located on the northern margin of
the Ngalia Basin in the Northern Territory.
Drill hole A summary of all information material to the Refer to Annexure 1.
Information understanding of the exploration results including a
tabulation of the following information for all Material
drill holes:
o
easting and northing of the drill hole collar
o
elevation or RL (Reduced Level – elevation above
sea level in metres) of the drill hole collar
o
dip and azimuth of the hole
o
down hole length and interception depth
o
hole length.
If the exclusion of this information isjustified on the

22

basis that the information is not Material and this
exclusion does not detract from the understanding of
the report, the Competent Person should clearly
explain why this is the case.
Data In reporting Exploration Results, weighting averaging Exploration results, i.e. mineralised intercepts, are reported as equivalent U3O8
aggregation techniques, maximum and/or minimum grade values (eU3O8) from processed gamma logs. For reporting purposes (see
methods truncations (eg cutting of high grades) and cut-off Annexure 2) significant gamma log intersections have been composited from
grades are usually Material and should be stated. 10 cm deconvolved eU3O8values using the following criteria: a cut-off grade of
Where aggregate intercepts incorporate short lengths 100 ppm U3O8, a minimum thickness of 0.3 m, a maximum internal dilution of
of high grade results and longer lengths of low grade 0.3 m, no external dilution and a grade x thickness value of >100. A Radioactive
results, the procedure used for such aggregation Equilibrium Factor (REF) value of 1 was applied, i.e. U3O8/ eU3O8= 1.
should be stated and some typical examples of such
aggregations should be shown in detail.
The assumptions used for any reporting of metal
equivalent values should be clearly stated.
Relationship These relationships are particularly important in the Based on geological mapping work by CPM geologists and structural
between reporting of Exploration Results. measurements of drill core, sandstone beds hosting mineralisation are shallowly
mineralisation If the geometry of the mineralisation with respect to the dipping (broadly between 10 and 20 degrees). All CPM holes have been drilled
widths and drill hole angle is known, its nature should be reported. vertically and true widths of intersections are approximately 95% of the reported
intercept If it is not known and only the down hole lengths are downhole widths.
lengths reported, there should be a clear statement to this
effect(eg ‘down hole length, true width not known’).
Diagrams Appropriate maps and sections (with scales) and Refer to figures in the body of the text.
tabulations of intercepts should be included for any
significant discovery being reported These should
include, but not be limited to a plan view of drill hole
collar locations and appropriate sectional views.
Balanced Where comprehensive reporting of all Exploration All significant results have been reported (see Annexure 2). Historical results have
reporting Results is not practicable, representative reporting of previously been reported and are available as open file reports from the NTGS.
both low and high grades and/or widths should be
practiced to avoid misleading reporting of Exploration
Results.
Other Other exploration data, if meaningful and material, Preliminary metallurgical test work involving acid and alkaline leach tests on
substantive should be reported including (but not limited to): composite mineralised samples were undertaken by AMDEL in March 1976.
exploration geological observations; geophysical survey results; AMDEL reported high levels of extraction with a best result of 99% using a pH 1.5
data geochemical survey results; bulk samples – size and leachate over 24 hours; acid consumption was low (3 to 5 kg/tonne).
method of treatment; metallurgical test results; bulk Petrographic studies were undertaken by AMDEL in 1973-1976 who reported
density, groundwater, geotechnical and rock uraninite and coffinite as the dominant uranium minerals in association with pyrite
characteristics; potential deleterious or contaminating and ferroselite. More recently (2014) petrographic work conducted by the CSIRO
substances. has shown a close association between uranium and detrital-originphyllosilicate

23

minerals including biotite, clays and chromium-bearing chlorite; Walbiri and
satellite deposits are characterised by low levels of carbonate cement.
Further work The nature and scale of planned further work (eg tests Future exploration activities are planned to test extensions and stratigraphic
for lateral extensions or depth extensions or large- repeats of Walbiri mineralisation in folded strata of the Mt Eclipse syncline and
scale step-out drilling). anticline to the south of the currently known extent of the Walbiri resource.
Diagrams clearly highlighting the areas of possible Additional work is planned to rigorously assess the nature and extent of possible
extensions, including the main geological uranium series disequilibrium within various mineralised domains to provide a
interpretations and future drilling areas, provided this better estimate of the Radioactive Equilibrium Factor (REF).
information is not commercially sensitive.

Section 3: Estimation and Reporting of Mineral Resources

Criteria JORC Code explanation JORC Code explanation Commentary Commentary
Database Measures taken to ensure that data has not been Data used in the Mineral Resource estimate was sourced from the original
integrity corrupted by, for example, transcription or keying errors, hardcopy. Hardcopy data was converted to digital format and collated, tabulated
between its initial collection and its use for Mineral and verified before being validated upon importation into EME’s Geobank
Resource estimation purposes. database. CSA Global were provided with a validated Micromine database by
Data validation procedures used. EME. Relevant tables from the database were exported to Micromine .DAT format
for import into Micromine 2014 software prior to use in the Mineral Resource
estimation.
Validation of the imported data included checks for missing, duplicated and/or
incorrectly recorded collar locations, survey data, sample data, gamma log data and
lithological log data.
Original historical gamma logs were reprocessed and deconvolved to yield eU3O8
(ppm) values which correlated well with the historical information stored in EME’s
archives.
Site visits Comment on any site visits undertaken by the No site visits were undertaken by the Competent Person (Mineral Resource
Competent Person and the outcome of those visits. Estimation) or CSA Global staff.
If no site visits have been undertaken indicate why this is CSA has relied on EME for all data regarding the deposits, and given the current
the case. stage of theproject,considers this appropriate.
Geological Confidence in (or conversely, the uncertainty of the There is a reasonable level of confidence in the geological interpretation of Walbiri
interpretation geological interpretation of the mineral deposit. and the adjacent satellite deposits. The geology is traceable and reasonably
Nature of the data used and of any assumptions made. continuous between drill holes and sections. Geological controls such as the dip of
The effect, if any, of alternative interpretations on the sedimentary rocks and the definable shale marker beds have been used to
Mineral Resource estimation. constrain the extrapolation of mineralisation within stratigraphic bounds. It is
The use of geology in guiding and controlling Mineral recommended in future exploration programs that several holes are ‘twinned’ to
Resource estimation. validate the historical data and a more detailed estimation of the Radioactive
The factors affecting continuity both ofgrade and Equilibrium Factor (REF) be undertaken.

24

geology. Geological structure and gamma logging have formed the basis for the geological
interpretation. The REF is assumed to be 1 based on comparison of gamma and
assays measurements in drill holes (58 pairs) and historical closed can eU3O8and
assay measurements (103 samples).
Further work may be required to better define the limits of the mineralisation,
particularly with depth, but no significant downside changes to the currently
interpreted mineralised volume are anticipated.
Mineralisation is primarily concentrated within sandstones between
siltstone/claystone (‘shale’) lenses and interlayers that form lower and upper
confining layers.
Grade continuity is controlled by a reduced zone within partially oxidised sandstones
and siltstones; regionally the deposits are hosted along the northern margin of the
Ngalia Basin, which is an elongate intracratonic depression about 300 km long
(east-west) and 40 km wide (north- south) on average. This basin is filled with late
Proterozoic to Palaeozoic aged sedimentary rocks, predominantly continental-
marine arkosic sandstone,and Neoproterozoicglacigene deposits andquartzite.
Dimensions The extent and variability of the Mineral Resource Mineralisation is stratiform in nature but is variably distributed along strike and
expressed as length (along strike or otherwise), plan at depth due to probable epigenetic modification of the deposit. The dimensions
width, and depth below surface to the upper and lower of the Walbiri mineralised domain is approximately 3.6 km along-strike with an
limits of the Mineral Resource. average plan width of 300 m and maximum modelled plan width of 1,100 m. The
total combined strike length of the Walbiri deposit and its two satellite deposits
(Sundberg and Hill One) is 8.7 km overall. Stratigraphy and mineralisation dips
between 10 and 18 degrees to the SW. The mineralised interval varies from 0.2 m to
7.5 m,averaging1.3 m. The model extends from surface to 230 m below surface.
Estimation The nature and appropriateness of the estimation Gamma logging has been used for the definition of mineralised intervals and
and technique(s) applied and key assumptions, including interpretation (wireframing) of mineralisation. The REF is assumed to be 1. The
modelling treatment of extreme grade values, domaining, model consists of 35 mineralised domains defined by wireframe models.
techniques interpolation parameters and maximum distance of Grade estimation was carried out using the Multiple Indicator Kriging (MIK)
extrapolation from data points. If a computer assisted method using Micromine 2014 software. Downhole and directional indicator
estimation method was chosen include a description of semivariograms have been used for to define the distance of interpolation. No top
computer software and parameters used. cutting of extreme grade values was undertaken.
The availability of check estimates, previous estimates Several in-house, non-JORC, historical resource estimates were undertaken for
and/or mine production records and whether the Mineral the Walbiri deposit. In the latest available estimate (November 1976), Australian
Resource estimate takes appropriate account of such Mineral Development Laboratories (AMDEL) obtained an estimate of 4,789
data. tonnes U3O8for an average grade of 1,140 ppm U3O8(cut-off grade not
The assumptions made regarding recovery of by- specified) using chemical assay data and employing geostatistical methods. No
products. mining has taken place.
Estimation of deleterious elements or other non-grade No assumptions have been made regarding recovery of by-products.
variables of economic significance (eg sulphur for acid No other elements were estimated.
mine drainage characterisation). The block model was constructed using a 10 m E by 10 m N by 0.5 m RL
In the case of block model interpolation, the block size in parent block size,with sub-cellingto 2 m E by2 m N by0.1 m RL for domain

25

relation to the average sample spacing and the search volume resolution. The parent cell size was chosen on the basis of the
employed. morphology of mineralised lenses and in order to avoid the generation of
Any assumptions behind modelling of selective mining unrealistically large blocks. The sub-celling size was chosen to maintain the
units. resolution of the mineralised bodies. The sub-cells were optimised in the
Any assumptions about correlation between variables. models where possible to form larger cells.
Description of how the geological interpretation was The search ellipse radii were determined from the ranges of semivariograms:
used to control the resource estimates. the main direction being along strike of mineralised bodies (range 90 m), the
Discussion of basis for using or not using grade cutting
or capping.
second direction being down dip of mineralised bodies (range 188.7 m) and
the range of the third direction was set at 2.5 m. The first radial dimensions
The process of validation, the checking process used,
the comparison of model data to drill hole data, and use
of reconciliation data if available.
were 10 x 10 x 0.3 m, the second 60 x 127 x 0.3 m, and the third 90 x 188.7 x
0.5 m. The model cells that did not receive grades from the first runs were
then estimated using radii incremented by the 90 x 188.7 x 0.5 m (2.5 m).
No selective mining units were assumed in this estimate.
Geological boundaries were used to guide the interpretation of mineralised
lenses. Specifically, mineralisation occur within the shallow dipping 10-18° Mt
Eclipse Sandstone. For the satellite deposits, the sections contain one drill hole
only. Grade envelopes at 100 ppm eU3O8were defined for interpretative
purposes.
A 200 ppm eU3O8cut-off grade was applied to mineralisation inside envelopes.
No top cuts have been applied at this stage.
Validation of the block model consisted of a comparison between the block model
volume and the wireframed volumes. Grade estimates were validated by visual
comparison with the drill data. Grade estimation was verified by IDW2 and
Ordinary Kriging without a top cut applied and with a top cut of 4,100 ppm U3O8
applied. The block model compared favourably with grade composites for a
series of sections in different directions (north, east).
Noreconciliationdatais available at this early stage of the project.
Moisture Whether the tonnages are estimated on a dry basis or The tonnages are estimated on a dry basis.
with natural moisture, and the method of determination
of the moisture content.
Cut-off The basis of the adopted cut-off grade(s) or quality A cut-off grade of 100 ppm U3O8has been used for interpretation and a cut-off
parameters parameters applied. grade of 200 ppm U3O8has been used for resource reporting. Based on CSA’s
experience with this type of deposit, this is considered a reasonable cut-off grade
which could result in eventual economic extraction.
Mining Assumptions made regarding possible mining methods, At this stage of resource development it is assumed that mining would be by open
factors or minimum mining dimensions and internal (or, if pit and/or underground methods. Future hydrogeological investigations and
assumptions applicable, external) mining dilution. It is always leaching tests would be useful in determining whether solution mining may be
necessary as part of the process of determining possible.
reasonable prospects for eventual economic extraction
to consider potential mining methods, but the
assumptions made regarding mining methods and

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parameters when estimating Mineral Resources may not
always be rigorous. Where this is the case, this should
be reported with an explanation of the basis of the
mining assumptions made.
Metallurgical The basis for assumptions or predictions regarding Metallurgical and hydrological test work is required to determine if the deposit is
factors or metallurgical amenability. It is always necessary as part amenable to solution mining and/or heap leaching. There is a requirement for a
assumptions of the process of determining reasonable prospects for certain level of natural permeability and for mineralisation to occur below the water
eventual economic extraction to consider potential table if in-situ recovery is to be considered. Hydrological pumping cluster tests
metallurgical methods, but the assumptions regarding would need to be undertaken if the deposit is found to be amenable to in-situ
metallurgical treatment processes and parameters made extraction processes.
when reporting Mineral Resources may not always be
rigorous. Where this is the case, this should be reported
with an explanation of the basis of the metallurgical
assumptions made.
Environmen- Assumptions made regarding possible waste and No detailed assumptions regarding possible waste and process residue options
tal factors or process residue disposal options. It is always necessary have been made at this early stage.
assumptions as part of the process of determining reasonable
prospects for eventual economic extraction to consider
the potential environmental impacts of the mining and
processing operation. While at this stage the
determination of potential environmental impacts,
particularly for a greenfields project, may not always be
well advanced, the status of early consideration of these
potential environmental impacts should be reported.
Where these aspects have not been considered this
should be reported with an explanation of the
environmental assumptions made.
Bulk density Whether assumed or determined. If assumed, the basis Bulk density testing was carried out on both mineralised and un-mineralised drill
for the assumptions. If determined, the method used, core. EME supplied CSA Global with a table comprising 144 bulk density
whether wet or dry, the frequency of the measurements, determinations from 11 drill holes. The rock types found at Walbiri include arkose,
the nature, size and representativeness of the samples. sub-arkosic sandstone and shale.
The bulk density for bulk material must have been Density estimates were obtained using the Archimedes method on the selected
measured by methods that adequately account for void core samples. The balance was calibrated using two standard weights. Hairspray
spaces (vugs, porosity, etc), moisture and differences was used to seal the exterior to account for natural porosity (voids) when
between rock and alteration zones within the deposit. necessary. Test work to date has shown that there are no significant density
Discuss assumptions for bulk density estimates used in differences due to sample porosity or alteration type.
the evaluation process of the different materials. An average bulk density of 2.56 t/m3 has been applied to all material in the
models.
Classification The basis for the classification of the Mineral Resources CSA Global has considered several factors in the classification of the Mineral
into varying confidence categories. Resources such as search ellipse dimensions, geological data and exploration
Whether appropriate account has been taken of all drill holegrids. The Walbiri deposit has been classified as Inferred due to: the

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relevant factors (i.e. relative confidence in limited data available for REF definition, the need to verify historical gamma
tonnage/grade estimations, reliability of input data, logging by drilling twin holes, and the fact that some exploration sections are
confidence in continuity of geology and metal values, based on single drill holes (Sundberg and Hill One deposits).
quality, quantity and distribution of the data). The Inferred classification has taken into account all available geological and
Whether the result appropriately reflects the Competent sampling information, and the classification level is considered appropriate.
Person’s view of the deposit. The Mineral Resource estimate appropriately reflects the views of the Competent
Persons.
Audits or The results of any audits or reviews of Mineral Resource No audits of the Mineral Resource estimate has been undertaken at this time.
reviews estimates.
Discussion Where appropriate a statement of the relative accuracy The relative accuracy of the Mineral Resource estimate is reflected in the
of relative and confidence level in the Mineral Resource estimate reporting of the Mineral Resource as Inferred as per the guidelines contained in
accuracy/ using an approach or procedure deemed appropriate by the 2012 JORC Code.
confidence the Competent Person. For example, the application of The resource statement refers to global estimation of tonnes and grade.
statistical or geostatistical procedures to quantify the No production data is available for comparison.
relative accuracy of the resource within stated
confidence limits, or, if such an approach is not deemed
appropriate, a qualitative discussion of the factors that
could affect the relative accuracy and confidence of the
estimate.
The statement should specify whether it relates to global
or local estimates, and, if local, state the relevant
tonnages, which should be relevant to technical and
economic evaluation. Documentation should include
assumptions made and the procedures used.
These statements of relative accuracy and confidence of
the estimate should be compared with production data,
where available.

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