IMDEX LIMITED — Major Shareholding Notification 2011

Oct 16, 2011

Form 603

Corporations Law Section 671B

Notice of initial substantial holder

To Company Name/Scheme IMDEX LIMITED

ACN/ARSN 008 947 813

1. Details of substantial holder (1)

Name PERPETUAL LIMITED and subsidiaries ACN (if applicable) 000 431 827

The holder became a substantial holder on _ 13_ / _10 / 2011_

2. Details of voting power

The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in on the date the substantial holder became a substantial holder are as follows:

Class ofsecurities (4)	Numberofsecurities	Persons’ votes (5)	Voting power(6)
Ordinary	10,400,165	10,400,165	5.09%

3. Details of relevant interests

The nature of the relevant interest the substantial holder or an associate had in the following voting securities on the date the substantial holder became a substantial holder are as follows:

Holderof relevantinterest	Nature of relevantinterest (7)	Class andnumberofsecurities
Refer annexure1 & 2

4. Details of present registered holders

The persons registered as holders of the securities referred to in paragraph above are as follows:

Holder of relevant interest	Registered holder of securities	Persons entitled to be registered as holder(8)	Class and number of securities
Refer annexure 1

5. Consideration

The consideration paid for each relevant interest referred to in paragraph 3 above, and acquired in the four months prior to the day that the substantial holder became a substantial holder is as follows:

Holder of relevant interest	Date of acquisition	Consideration (9)	Consideration (9)	Class and number of securities
Refer annexure 3		Cash	Non - Cash

Associates

The reasons the persons named in paragraph 3 above are associates of the substantial holder are as follows:

Name and ACN (if applicable) Nature of association Refer to Annexure 1 & 2

6. Addresses The addresses of persons named in this form are as follows: Name Address Refer to Annexure 1

Signature

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Print name JOANNE HAWKINS Capacity COMPANY SECRETARY
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ANNEXURE 1 - Perpetual Investments Account Codes & Details

Perpetual Investments Management Limited (PIML), subsidiary of Perpetual Limited, as Responsible Entity for:

INTERNAL CODE	ACCOUNT DETAILS	REGISTRATION DETAILS
ALL 'PC' CODES	RBC Dexia Investor Services Trust ACF: PIML (Select Investments) RBC Dexia Investor Services Australia Pty Limited GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust ACF: PIML (Select Investments) RBC Dexia Investor Services Australia Pty Limited GPO Box 5430 Sydney NSW 2001
PCEF	RBC Dexia Investor Services Trust ACF: Perpetual's Wholesale Concentrated Equity Fund Account Code: PICEF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PCCEF	RBC Dexia Investor Services Trust ACF: PIML (Select Investments) Account Code: PCCEF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIBIAS	RBC Dexia Investor Services Trust ACF: Perpetual's Benchmark Industrial Australian Share Fund Account Code: PIBIAS GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIGPVF	RBC Dexia Investor Services Trust ACF: Perpetual's Pure Value 2 Share Fund Account Code: PIGPVF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIGSFP	RBC Dexia Investor Services Trust ACF: Perpetual's Australian Share Fund Account Code: PIGSFP GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIICAP	RBC Dexia Investor Services Trust ACF: Perpetual's Investor Choice Fund Account Code: PIICAP GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIISF	RBC Dexia Investor Services Trust ACF: Perpetual's Industrial Share Fund Account Code: PIISF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIRAF	RBC Dexia Investor Services Trust ACF: Perpetual Resources Fund Account code: PIRAF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PISINP	RBC Dexia Investor Services Trust ACF: Perpetual's Investor Choice Fund Account Code: PISINP GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PISMA1	RBC Dexia Investor Services Trust ACF: Perpetual's Australian Share Fund Account Code: PISMA1 GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PISMA2	RBC Dexia Investor Services Trust ACF: Perpetual's Australian Share Fund Account Code: PISMA2 GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PIWGAP	UBS Nominee Pty Ltd ACF: Perpetual Wholesale Geared Australian Share Fund Account code: A111266 C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	UBS Nominee Pty Ltd Level 16, Chifley Tower 2 Chifley Square Sydney NSW 2000
PIWCPF	UBS Nominee Pty Ltd ACF: PI Protected Aust Share Fund A Account code PIWCPF C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	UBS Nominee Pty Ltd Level 16, Chifley Tower 2 Chifley Square Sydney NSW 2000
PIWJPI	RBC Dexia Investor Services Trust ACF: Perpetual JF Wholesale Prop Income Fund Account Code: PIWJPI GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001

This is Annexure 1 Page 1 of 4 of 603

PIWQLS	UBS Nominee Pty Ltd ACF: Perpetual QI Long Short Fund Account code: A1025745 C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	UBS Nominee Pty Ltd Level 16, Chifley Tower 2 Chifley Square Sydney NSW 2000
PIWSPF	UBS Nominee Pty Ltd ACF: Perpetual Wholesale Share Plus Fund Account code: A111267 C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	UBS Nominee Pty Ltd Level 16, Chifley Tower 2 Chifley Square Sydney NSW 2000
PMWSC	RBC Dexia Investor Services Trust ACF: Perpetual Wholesale Smaller Company Fund Account Code: PIWSCS GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
PMWSRF	RBC Dexia Investor Services Trust ACF: Perpetual Wholesael Ethical Fund Account Code: PIWSRF GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
Perpetual Investments Management Limited (PIML), subsidiary of Perpetual Limited, as Trustee for:
ALL 'SS' CODES	RBC Dexia Investor Services Trust ACF: PIML (Select Super) RBC Dexia Investor Services Australia Pty Limited GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust ACF: PIML (Select Super) RBC Dexia Investor Services Australia Pty Limited GPO Box 5430 Sydney NSW 2001
Perpetual Investments Management Limited (PIML), subsidiary of Perpetual Limited, under Investment Management Agreements with:

INTERNAL CODE	ACCOUNT DETAILS	REGISTRATION DETAILS
CBAISF	Citicorp Nominees Pty Ltd. ACF: Commonwealth Aust Shares Fund 4 Account Code:PICISF C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	Citicorp Nominees Pty Ltd A/C EASS04 GPO Box 764G Melbourne VIC 3001
NSWTC	Cogent Nominees Pty Ltd ACF: NSW Treasury Corporation Account Code: PINSWT C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	Cogent Nominees Pty Limited A/C HGFPTE P.O. Box R209 Royal Exchange Sydney NSW 1225
PIACT	JP Morgan Chase Nominees Ltd ACF: Australian Capital Territory Treasury Account Code: PIACT C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 32512 Locked Bag 7, Royal Exchange Sydney NSW 2000
PIAVIV	JP Morgan Chase Nominees limited ACF: NAVIGATOR AUSTRALIA LIMITED Account Code: PIAVIV C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 58815 Locked Bag 7, Royal Exchange Sydney NSW 2000
PICATH	National Australia Custodian Services ACF: CATHOLIC SUPER FUND PTY LTD Account Code: PICATH C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	National Australia Custodian Services A/C CDPRDE/17392-10 Level 21, 500 Bourke St Melbourne VIC 3000
PIEFM6	Cogent Nominees Pty Ltd ACF: EFM Australian Share Fund 6 Account Code: PIEFM6 C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	Cogent Nominees Pty Limited A/C WTXME6 P.O. Box R209 Royal Exchange Sydney NSW 1225
PIFIRS	National Nominees Ltd ACF: FIRST SUPER MANDATE AUSTRALIA Account Code: PIFIRS C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	National Australia Custodian Services A/C 16444-14 Level 21, 500 Bourke St Melbourne VIC 3000
PIHEAL	JP Morgan Chase Nominees limited ACF: HEALTH SUPER PTY LTD Account Code: PIHEAL C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 74805 Locked Bag 7, Royal Exchange Sydney NSW 2000
PIHEST	JP Morgan Chase Nominees limited ACF: HEST Australia Limited Account Code: PIHEST C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 33112 Locked Bag 7, Royal Exchange Sydney NSW 2000

This is Annexure 1 Page 2 of 4 of 603

PILGSS	JP Morgan Chase Nominees limited ACF: HEST Australia Limited Account Code: PILGSS C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2002	JP Morgan Chase Nominees A/C 56466 Locked Bag 7, Royal Exchange Sydney NSW 2000
PILUCR	JP Morgan Chase Nominees Ltd ACF: LUCRF PTY LTD MANDATE Account code: PILUCR C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2000	JP Morgan Chase Nominees A/C 58865 Locked Bag 7, Royal Exchange Sydney NSW 1999
PIMEDA	Cogent Nominees Pty Ltd ACF: MEDIA SUPER SMALLER COMPANIES FUND Account code: PIMEDA C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2000	Cogent Nominees Pty Ltd A/C PISPTE P.O. Box R209, Royal Exchange Sydney NSW 1225
PIRAEO	State Street Australia Limited ACF: RUSSELL AUSTRALIAN OPPORTUNITIES FUND Account code: PIRAEO C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2000	State Street Australia Limited A/C BT7B Level 18, 338 Pitt Street Sydney NSW 2000
PISTCF	JP Morgan Chase Nominees Ltd ACF: SAS Trustee Corporation Account code: PISTCF C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 34893 Locked Bag 7, Royal Exchange Sydney NSW 2000
PITWUS	National Nominees Ltd ACF: TWU SUPERANNUATION Account Code: PITWUS C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	National Australia Custodian Services A/C TUPPAE/16448-28 Level 21, 500 Bourke St Melbourne VIC 3000
PMCBUS	National Nominees Ltd ACF: Construction & Building Union Superannuation Fund Account Code: PICBUS C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	National Australia Custodian Services A/C CBPFAE/5267-15 Level 21, 500 Bourke St Melbourne VIC 3000
PMCGSF	Citicorp Nominees Pty Ltd ACF: Commonwealth Aust Shares Fund 11 Account Code: PICGSF C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	Citicorp Nominees Pty Ltd A/C EASS11 GPO Box 764G Melbourne VIC 3001
PMCPSF	Citicorp Nominees Pty Ltd ACF:Commonwealth Property Fund 3 Account Code: PICPSF C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	Citicorp Nominees Pty Ltd A/C EPSS03 GPO Box 764G Melbourne VIC 3001
PIAUST	JP Morgan Chase Nominees Limited ACF: Australian Super Ethical SRI Fund Account Code: PIAUST C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 36018 Locked Bag 7 Royal Exchange Sydney NSW 2000
PMHOST	JP Morgan Chase Nominees Limited ACF: Host - Plus Pty Ltd Account Code: PIHOST C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 20004 Locked Bag 7 Royal Exchange Sydney NSW 2000
PMSTA	JP Morgan Chase Nominees Limited ACF: Super Trust of Australia Account Code: PISTA C/- RBC Dexia Investor Services Australia Nominees Pty Limited GPO Box 5430 Sydney NSW 2001	JP Morgan Chase Nominees A/C 40909 Locked Bag 7 Royal Exchange Sydney NSW 2000
QITE2	RBC Dexia Investor Services Trust ACF: Quantitative Investments TE 2 Equity Fund Account Code: PIQTE2 GPO Box 5430 Sydney NSW 2001	RBC Dexia Investor Services Trust GPO Box 5430 Sydney NSW 2001
T2	Perpetual Trustee Company Limited (Private Client Division)	Perpetual Trustee Company Limited GPO Box 4172 Sydney NSW 2001
T3	Perpetual Trustees Victoria Limited (Private Client Division)	Perpetual Trustee Company Limited GPO Box 4172 Sydney NSW 2001

This is Annexure 1 Page 3 of 4 of 603

T4	Perpetual Trustees Queensland Limited (Private Client Division)	Perpetual Trustee Company Limited GPO Box 4172 Sydney NSW 2001
T6	Perpetual Trustees WA Limited (Private Client Division)	Perpetual Trustee Company Limited GPO Box 4172 Sydney NSW 2001
T7	Perpetual Trustee Company Canberra Limited (Private Client Division)	Perpetual Trustee Company Limited GPO Box 4172 Sydney NSW 2001
TEL	National Nominees Limited ACF: Telstra Superannuation Pty Limited Account Code: PITEL C/- RBC Dexia Investor Services Australia nominees Pty Limited GPO Box 5430 Sydney NSW 2001	National Australia Custodian Services A/C 3093-15 TSPPAE Level 21, 500 Bourke Street Melbourne VIC 3000

Perpetual Limited GPO BOX 4172 Sydney NSW 2001

This is Annexure 1 Page 4 of 4 of 603

ANNEXURE 2

PRESENT RELEVANT INTERESTS

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This is annexure 2 Page 1 of 1 referred to in Form 603

ANNEXURE 3

CHANGES IN RELEVANT INTERESTS

Account	Security		Volume		Value		Price		AsAtDate
PMWSCS	IMD	-	74,337	-		171,109	$	2.30	21/07/2011
PMWSCS	IMD	-	38,427	-		90,688	$	2.36	22/07/2011
PMWSCS	IMD	-	177,324	-		413,413	$	2.33	22/07/2011
PMWSCS	IMD	-	46,035	-		110,788	$	2.41	25/07/2011
PMWSCS	IMD	-	93,887	-		225,507	$	2.40	27/07/2011
PMWSCS	IMD	-	133,756	-		323,583	$	2.42	01/08/2011
PMWSCS	IMD	-	60,446	-		144,557	$	2.39	02/08/2011
PMWSCS	IMD		10,616			23,003	$	2.17	03/08/2011
PMWSCS	IMD		95,225			209,495	$	2.20	04/08/2011
PMWSCS	IMD		308,834			582,152	$	1.89	05/08/2011
PMWSCS	IMD		140,111			245,923	$	1.76	08/08/2011
PMWSCS	IMD	-	188,566	-		359,859	$	1.91	10/08/2011
PMWSCS	IMD	-	177,188	-		380,954	$	2.15	15/08/2011
PMWSCS	IMD	-	55,712	-		121,820	$	2.19	16/08/2011
PMWSCS	IMD		186,431			383,172	$	2.06	19/08/2011
PMWSCS	IMD		59,256			117,327	$	1.98	22/08/2011
PMWSCS	IMD		120,495			242,725	$	2.01	24/08/2011
PMWSCS	IMD		57,570			115,917	$	2.01	25/08/2011
PMWSCS	IMD		7,196			14,392	$	2.00	26/08/2011
PMWSCS	IMD		87,677			181,491	$	2.07	05/09/2011
PMWSCS	IMD	-	171,659	-		367,350	$	2.14	07/09/2011
PMWSCS	IMD		267,442			549,861	$	2.06	08/09/2011
PMWSCS	IMD		17,291			34,459	$	1.99	13/09/2011
PMWSCS	IMD		8,454			16,147	$	1.91	20/09/2011
PMWSCS	IMD		83,196			164,071	$	1.97	21/09/2011
PMWSCS	IMD		160,500			294,967	$	1.84	22/09/2011
PMWSCS	IMD		167,540			292,424	$	1.75	23/09/2011
PMWSCS	IMD		23,689			41,790	$	1.76	07/10/2011
PMWSCS	IMD		68,906			128,165	$	1.86	11/10/2011
PMWSCS	IMD		42,383			77,917	$	1.84	12/10/2011
PMWSCS	IMD		268,909			505,549	$	1.88	13/10/2011
PMWSCS	IMD		168,068			319,111	$	1.90	13/10/2011
PIMEDA	IMD	-	13,678	-		31,484	$	2.30	21/07/2011
PIMEDA	IMD	-	5,678	-		13,400	$	2.36	22/07/2011
PIMEDA	IMD	-	31,156	-		72,637	$	2.33	22/07/2011
PIMEDA	IMD	-	8,218	-		19,777	$	2.41	25/07/2011
PIMEDA	IMD	-	16,759	-		40,253	$	2.40	27/07/2011
PIMEDA	IMD	-	16,244	-		39,297	$	2.42	01/08/2011
PIMEDA	IMD	-	9,859	-		23,578	$	2.39	02/08/2011
PIMEDA	IMD		1,146			2,483	$	2.17	03/08/2011
PIMEDA	IMD		48,780			91,950	$	1.89	05/08/2011
PIMEDA	IMD		24,889			43,685	$	1.76	08/08/2011
PIMEDA	IMD	-	11,434	-		21,821	$	1.91	10/08/2011
PIMEDA	IMD	-	22,812	-		49,046	$	2.15	15/08/2011
PIMEDA	IMD	-	27,079	-		59,211	$	2.19	16/08/2011
PIMEDA	IMD		51,735			106,331	$	2.06	19/08/2011
PIMEDA	IMD		11,285			22,344	$	1.98	22/08/2011
PIMEDA	IMD		21,542			43,394	$	2.01	24/08/2011
PIMEDA	IMD		17,919			36,080	$	2.01	25/08/2011
PIMEDA	IMD		2,804			5,608	$	2.00	26/08/2011

This is annexure 3 Page 1 of 2 referred to in Form 603

PIMEDA	IMD		26,790		57,373	$	2.14	02/09/2011
PIMEDA	IMD		22,128		45,805	$	2.07	05/09/2011
PIMEDA	IMD	-	28,341	-	60,650	$	2.14	07/09/2011
PIMEDA	IMD		32,558		66,939	$	2.06	08/09/2011
PIMEDA	IMD		32,709		65,186	$	1.99	13/09/2011
PIMEDA	IMD		3,113		5,946	$	1.91	20/09/2011
PIMEDA	IMD		16,804		33,139	$	1.97	21/09/2011
PIMEDA	IMD		30,902		56,792	$	1.84	22/09/2011
PIMEDA	IMD		32,460		56,656	$	1.75	23/09/2011
PIMEDA	IMD		13,807		24,357	$	1.76	07/10/2011
PIMEDA	IMD		23,760		43,680	$	1.84	12/10/2011
PIMEDA	IMD		31,932		60,629	$	1.90	13/10/2011
PIMEDA	IMD		51,091		96,051	$	1.88	13/10/2011
PMWSRF	IMD	-	50,000	-	118,000	$	2.36	22/07/2011
PMWSRF	IMD	-	50,000	-	116,570	$	2.33	22/07/2011
PMWSRF	IMD	-	126,591	-	304,654	$	2.41	25/07/2011
PMWSRF	IMD	-	145,957	-	350,297	$	2.40	26/07/2011
PMWSRF	IMD	-	54,497	-	130,891	$	2.40	27/07/2011
PMWSRF	IMD	-	70,304	-	168,132	$	2.39	02/08/2011
PMWSRF	IMD	-	238,609	-	413,629	$	1.73	09/08/2011
PCAEPR	IMD		49,867		94,169	$	1.89	05/08/2011

This is annexure 3 Page 2 of 2 referred to in Form 603