ORBMINCO LIMITED — Share Issue/Capital Change 2012

May 29, 2012

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30[th] May 2012

THIS LETTER CONTAINS IMPORTANT INFORMATION ABOUT YOUR SHARES IN AUSTRALIAN-AMERICAN MINING CORPORATION LIMITED

Dear Shareholder

Minor Shareholding Sale Facility

The Board of Australian-American Mining Corporation Limited ( AusAmerican ASX: AIW, OTC.QX: OZAMY) is pleased to announce that it has established a share sale facility ( Facility ) offering minor shareholders a cost-effective and voluntary mechanism to sell their shares.

The Facility comprises 2 parts:

1. An offer for holders of an "unmarketable parcel” of the company’s shares (securities with a value of less than $500) ( Unmarketable Parcel ); and

2. An offer for holders of marketable, but small parcels of the company's shares (securities with a value of between $500 and $2,000) ( Small Marketable Parcel ).

Our records indicate that you hold a qualifying parcel, based on your shareholding at 5.00pm (WST) on 25[th] May 2012 and the closing price of AusAmerican shares on the Australian Securities Exchange ( ASX ) on 25[th] May 2012 of A$0.053.

Due to the brokerage costs of selling shares, you may have found it financially unattractive to sell your parcel of AusAmerican shares, even if you would like to do so. AusAmerican is also concerned at the high costs we incur to maintain small shareholdings (including costs associated with printing and mailing Annual Reports and Notices of Meetings, and the costs of the share registry).

AusAmerican has therefore decided to implement the Facility, which we are authorised to do under Schedule 4 of AusAmerican’s Constitution and ASX Listing Rule 15.13, to provide you an opportunity to sell your shares without incurring brokerage or other fees.

You do not have to sell your AusAmerican shares under this Facility if you do not want to do so.

Holders of Unmarketable Parcels (less than $500)

If you hold an Unmarketable Parcel, you have three options available to you:

1. Do nothing. If you take no action, AusAmerican will be entitled to sell on your behalf the number of shares set out on the enclosed Share Retention Form;

2. Complete and return the " Share Retention Form" . If you complete and return the Share Retention Form before 5.00pm (WST) on Friday 20[th] July 2012 ( Facility Close Date ), your shares will not be sold; or

Australian American Mining Corporation Ltd ABN 99 073 155 781 572 Hay Street, Perth, WA, Australia, 6000 Telephone: (08) 9325 5568 Facsimile: (08) 9325 5574

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1. Increase your shareholding to a marketable parcel (A$500 worth or more) by the Facility Close Date. If you increase your shareholding to a marketable parcel your shares will not be sold. If you wish to do so, you should contact your broker. The additional shares must be held in the same holding as your current shares and must be registered by 5.00pm (WST) on the Facility Close Date. If you have a number of holdings that you wish to consolidate, please contact Computershare Investor Services Pty Limited (Computershare) on 1300 850 505 (within Australia) or on +61 3 9415 4000 (outside Australia) before the facility close date.

Holders of Small Marketable Parcels (between $500 and $2,000)

If you hold a Small Marketable Parcel, you have two options available to you:

1. Do nothing. If you do nothing, your shares will not be sold; or

2. Complete and return the attached " Sale Instruction Form ". If you complete and return the Sale Instruction Form before the Facility Close Date, AusAmerican will sell on your behalf all of your shares in AusAmerican, at no brokerage cost to you.

Details of the sale of shares

The sale of your shareholding will be conducted on the ASX. AusAmerican will bear the brokerage and other costs associated with the sale of AusAmerican shares under the Facility, however you will bear any tax on income or capital gains on the sale of your shares.

D.J Carmichael Pty Ltd. ( Broker ) will act as execution-only broker on behalf of shareholders to effect any sales under the Facility. The sale of shares is expected to take place as soon as practicable but in any event not later than the date one (1) month from the Facility Close Date ( Termination Date ), and will be subject to the Broker being able to find purchasers for the shares. The Facility will terminate on the earlier of the Termination Date and the date all of the shares for sale under the Facility have been sold. Broker will effect sales by placing one or more orders to sell shares on the ASX in the ordinary course of business (including, in the Broker's sole discretion, by crossings).

The price you will receive for your shares will be calculated as the volume weighted average price of all shares sold by the Broker under the Facility. All participants who have their shares sold under the Facility will receive the same average price per AusAmerican share. That price will be determined by the Broker and may not be challenged in the absence of manifest error.

Your sale proceeds will be sent to you by the registry after the conclusion of the Facility and will be paid in Australian dollars in accordance with your existing payment instructions provided to AusAmerican in respect of your shareholding (i.e. mailed at your risk to your address on AusAmerican's share register or deposited into your bank account). If you wish to change your registered address, please contact our registry, Computershare, by telephone on 1300 850 505 (within Australia) or on +61 3 9415 4000 (outside Australia).

AusAmerican will send you written confirmation notifying you of the number of your AusAmerican shares sold through the Facility, the sale price for those shares and the total sale proceeds you have received. The sale of the your shares in accordance with the Facility will extinguish all your rights and interest in the shares and all claims you may have against AusAmerican in respect of the shares, including any dividends determined to be paid and not actually paid.

Australian American Mining Corporation Ltd ABN 99 073 155 781 572 Hay Street, Perth, WA, Australia, 6000

Telephone: (08) 9325 5568 Facsimile: (08) 9325 5574

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If your shares are in a CHESS holding and remain in a CHESS holding on the Facility Close Date, and are to be sold under the Facility, you should note that AusAmerican may, without further notice to you, sell the relevant shares while they remain in your CHESS holding, and may initiate a holding adjustment to move those shares to an issuer sponsored holding or a certificated holding for the purposes of that sale.

You cannot sell part of your shareholding under the Facility. If you hold an Unmarketable Parcel and do not want to sell all of your AusAmerican shares, you must return the Share Retention Form or increase your holding to a marketable parcel by 5.00pm (WST time) on the Facility Close Date. If you hold a Small Marketable Parcel and return the Sale Instruction Form, all of your AusAmerican shares will be sold.

If you wish to sell only some of your shares and not take part in the Facility, you should call your broker. Sales through your broker will generally be subject to brokerage that will not be met by AusAmerican.

The price of AusAmerican shares

In the period from 21[st] May 2012 to 25[th] May 2012, AusAmerican shares have traded on the ASX in the range of A$0.051 to A$0.057, with the closing price on 25[th] May 2012 being A$0.053. The price of AusAmerican shares is subject to change from time to time, and pricing information is available from a number of sources, including daily newspapers or the ASX website (www.asx.com.au) under the ASX code "AIW".

You should note that as the shares will be sold on market, the price at which your AusAmerican shares are sold will depend on a number of factors, including market conditions at the time of sale. You will not have control over the time at which your shares are sold, the price you receive may be different from the price appearing in the newspaper or quoted by ASX on any day, may not be the best price on the day that your shares are sold. If a large number of AusAmerican shares are sold under the Facility at the same time as your shares, this may have an adverse effect on the price that you receive.

However, without limitation to the foregoing, the Broker must sell AusAmerican shares under the Facility at the highest price reasonably obtainable for those shares at the time of the relevant sale.

Other important information

None of AusAmerican, the Broker or Computershare makes any statement of opinion or recommendation to you regarding whether to participate in the Facility, or whether to buy, sell or hold AusAmerican shares, or that the Facility is the best way to sell AusAmerican shares.

You may wish of course to elect to maintain your existing shareholding, in which case you

should take one of the steps outlined above.

If you wish to sell your shares, there are advantages in participating in the Facility compared to using a broker as no brokerage and handling fees are payable by you under the Facility, although there are also disadvantages, as you will not be able to control when and at what price your shares are sold under the Facility.

If you are in any doubt about whether to participate in the Facility, please consult your licensed financial adviser. You may also wish to obtain independent professional advice regarding the possible taxation consequences of your decision.

Nominees and Custodians should note that the Facility applies on a Registration level basis and not per underlying holder.

Australian American Mining Corporation Ltd ABN 99 073 155 781 572 Hay Street, Perth, WA, Australia, 6000

Telephone: (08) 9325 5568 Facsimile: (08) 9325 5574

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If you do not respond to this letter and your AusAmerican shares are to be sold under the Facility, AusAmerican will, as your agent under Article 3.2 of Schedule 4 of its Constitution, receive any notice (including a Financial Services Guide and any update of that document) that the Broker or Computershare is required to provide under the Corporations Act. Any such document will be made available on AusAmerican's announcements page on the ASX website.

In accordance with ASX Listing Rule 15.13 and Article 2.1(c) of Schedule 4 of the AusAmerican Constitution, the Facility will lapse if a takeover bid for AusAmerican is announced before sales under the Facility are completed, although it may be started again after the close of offers made under the takeover.

If you have any questions concerning your AusAmerican shareholding or how the Facility will work, please contact Computershare on 1300 850 505 (within Australia) or on +61 3 9415 4000 (outside Australia).

Yours faithfully

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Jim Malone Company Secretary

Further information:

Please contact Richard Holmes on +61 8 9325 5568 or Jim Malone +61 419 537 714

Australian American Mining Corporation Ltd ABN 99 073 155 781 572 Hay Street, Perth, WA, Australia, 6000

Telephone: (08) 9325 5568 Facsimile: (08) 9325 5574

Aus American Mining Corporation Limited

ABN 99 073 155 781

Return your Form to the Company’s share registry:

• By Mail to the Company’s share registry: Computershare Investor Services Pty Limited GPO Box 52 Melbourne Victoria 3001 Australia

For all enquiries:

000001 000 1301011221012102012221332120133322113 SAM MR JOHN SMITH 1 FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

) Phone: (within Australia) 1300 850 505 (outside Australia) 61 3 9415 4000

Unmarketable Parcel Share Retention Form

Your form must be received by 5.00pm (WST) Friday 20 July 2012

This is an important document that requires your immediate attention and can only be used in relation to the shareholding represented by the registration name printed overleaf. If you are in doubt about how to deal with this form, please contact your financial or other professional adviser.

Step 1: Registration Name

Please check the details provided and contact us on the number above if any of the details are incorrect. Use this form if you wish to retain your shares in Australian-American Mining Corporation Limited. If you have recently bought or sold shares your holding may differ from that shown. If you have already sold all your shares in Australian-American Mining Corporation Limited, do not complete or return this form.

If you have more than one holding on Australian-American Mining Corporation Limited’s register and you do not sell your shares under the Small Shareholding Sale Facility, you should consider consolidating them. For further advice in this regard, contact Computershare Investor Services on the number above.

Step 2: Signing Instructions

Individual: Where the holding is in one name, the shareholder must sign.

Joint Holding: Where the holding is in more than one name, all of the shareholders must sign.

Power of Attorney: Please attach a certified photocopy of the Power of Attorney to this form when you return it.

Companies: Where the company has a Sole Director who is also the Sole Company Secretary, this form must be signed by that person in the box labelled ‘Sole Director and Sole Company Secretary’. If the company (pursuant to section 204A of the Corporations Act 2001) does not have a Company Secretary, a Sole Director can also sign alone as ‘Sole Director’. Otherwise this form must be signed by a Director jointly with either another Director or a Company Secretary. Please sign in the appropriate place to indicate the office held and delete title as applicable.

Deceased Estate: All executors must sign and a certified copy of Probate or Letters or Administration must accompany this form.

Entering your contact details is not compulsory, but will assist us if we need to contact you.

Turn over to complete the form è

View your shareholder information, 24 hours a day, 7 days a week: : www.investorcentre.com

Your secure access information is:

Review your shareholding

SRN/HIN: I1234567890

Update your shareholding

Supply your direct credit instructions PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confidential.

Unmarketable Parcel Share Retention Form

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STEP 1 Registration Name & Offer Details

Registration Name: MR JOHN SAMPLE FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030 Offer Details: Shares held as at 5.00pm (WST) on 25 May 2012: 1234567890

I 123456789

IND

• For your security keep your SRN/HIN confidential.

Change of address. If incorrect, mark this box and make the correction in the space to the left.

STEP 2

Signature of Shareholder(s) This section must be completed.

By signing and returning this form, I/we confirm that I/we understand that my/our shares will NOT be sold under the Small Shareholding Sale Facility

Individual or Shareholder 1 Shareholder 2 Shareholder 3 Director Director/Company Secretary Sole Director and Sole Company Secretary Contact Contact Daytime / / Name Telephone Date Email Addres ~~s~~

Privacy Statement

Personal information is collected on this form by Computershare Investor Services Pty Limited (CIS) as registrar for the securities issuers (the issuer), for the purpose of maintaining registers of securityholders, facilitating distribution payments and other corporate actions and communications. Your personal information may be disclosed to our related bodies corporate, to external service companies such as print or mail service providers, or as otherwise permitted by law. If you would like details of your personal information held by CIS, or you would like to correct information that is inaccurate, incorrect or out of date, please contact CIS. In accordance with the Corporations Act 2001, you may be sent material (including marketing material) approved by the issuer in addition to general corporate communications. You may elect not to receive marketing material by contacting CIS using the details provided above or email privacy@computershare.com.au

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Australian-American Mining Corporation Limited

ABN 99 073 155 781

Return your Form:

To Your Broker:

To Your Broker: Return this form directly to your stockbroker  For all enquiries:  Phone: (within Australia) 1300 850 505 (outside Australia) 61 3 9415 4000

000001 000 1301011221012102012221332120133322113 SAM MR JOHN SMITH 1 FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

Sale Instruction Form

CHESS

Your form must be received by 5.00pm (WST) Friday 20 July 2012

This is an important document that requires your immediate attention. It can only be used in relation to the shareholding represented by the registration name printed overleaf. If you are in doubt about how to deal with this form, please contact your fi nancial or other professional adviser.

Step 1: Registration Name

Please check the details provided and contact us on the number above if any of the details are incorrect. Use this form if you wish to sell ALL of your shares under the Small Shareholding Sale Facility. If you have recently bought or sold shares your holding may differ from that shown. If you have already sold all your shares in Australian-American Mining Corporation Limited, do not complete or return this form.

with either another Director or a Company Secretary. Please sign in the appropriate place to indicate the offi ce held.

Deceased Estate: All executors must sign and, if not already noted by the registry, a certifi ed copy of Probate or Letters or Administration must accompany this form.

Entering your contact details is not compulsory, but will assist us if we

need to contact you.

Step 3: Controlling Participant Authorisation

After you have completed the form, this section must be completed by your Controlling Participant. By sending this form to your Controlling Participant you are instructing them to stamp this form and immediately forward to Computershare Investor Services at GPO Box 52, Melbourne, Victoria.

Step 2: Signing Instructions

By signing and returning this form, you agree to sell all your shares under the Small Shareholding Sale Facility. Individual: Where the holding is in one name, the shareholder must sign. Joint Holding: Where the holding is in more than one name, all of the shareholders must sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the registry, please attach a certifi ed photocopy of the Power of Attorney to this form when you return it. Companies: Where the company has a Sole Director who is also the Sole Company Secretary, this form must be signed by that person. If the company (pursuant to section 204A of the Corporations Act 2001) does not have a Company Secretary, a Sole Director can also sign alone. Otherwise this form must be signed by a Director jointly

In order for your shares to be sold under the Small Shareholding Sale Facility, your Controlling Participant must affi x their broker stamp where indicated. By affi xing their stamp to this form, your Controlling Participant confi rms its approval or your participation in the Small Shareholding Sale Facility and the removal of your shares from your CHESS holding to satisfy your sale instruction request.

Computershare will not process your Sale Instruction Form unless it has been stamped by your Controlling Participant.

Turn over to complete the form 



View your shareholder information, 24 hours a day, 7 days a week: www.investorcentre.com

Your secure access information is:

Review your shareholding

SRN/HIN: I1234567890

Update your shareholding

Supply your direct credit instructions

PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confi dential.

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Sale Instruction Form

Registration Name & Shareholder Details

Registration Name:

MR JOHN SAMPLE FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

I 123456789

IND

For your security keep your SRN/HIN confi dential.

Change of address. Shareholders sponsored by a broker (reference number commences with ‘ X ’) should advise your broker of any changes.

Shareholder Details: Subregister: CHESS Shares held as at 5.00pm (WST) 1234567890 on 25 May 2012:

Signature of Shareholder(s) This section must be completed.

By signing and returning this form, I/we confi rm that I/we:

• understand that my/our shares will be sold under the Small Shareholding Sale Facility.

• agree to all of the terms and conditions of the Small Shareholding Sale Facility (the “Terms and Conditions”) as enclosed with this form, and

• give the warranties, acknowledgements and agreements set out in the Terms and Conditions.

Individual or Shareholder 1 Shareholder 2 Shareholder 3 Director/Sole Director and Sole Company Director/Company Secretary Sole Director (No Company Secretary)* Secretary

• By signing here, I (insert name in full) ____ warrant that, pursuant to the Corporations Act, the company does not have a Company Secretary and that as the Sole Director I am authorised by the company to complete this form.

Contact Name Email Addres ~~s~~

Contact Daytime / / Telephone Date

Controlling Participant (‘broker’) Authorisation

Controlling Participant’s Stamp

This section must be completed. Your Sale Instruction Form will not be processed unless it has been stamped by your Controlling Participant.

Privacy Statement

Personal information is collected on this form by Computershare Investor Services Pty Limited (CIS) as registrar for the shares issuers (the issuer), for the purpose of maintaining registers of shareholders, facilitating distribution payments and other corporate actions and communications. Your personal information may be disclosed to our related bodies corporate, to external service companies such as print or mail service providers, or as otherwise permitted by law. If you would like details of your personal information held by CIS, or you would like to correct information that is inaccurate, incorrect or out of date, please contact CIS. In accordance with the Corporations Act 2001, you may be sent material (including marketing material) approved by the issuer in addition to general corporate communications. You may elect not to receive marketing material by contacting CIS using the details provided above or email privacy@computershare.com.au

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Australian-American Mining Corporation Limited

Return your Form:

ABN 99 073 155 781

 By Mail: Computershare Investor Services Pty Limited GPO Box 52 Melbourne Victoria 3001 Australia

For all enquiries:

000001 000 1301011221012102012221332120133322113 SAM MR JOHN SMITH 1 FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

 Phone: (within Australia) 1300 850 505 (outside Australia) 61 3 9415 4000

Sale Instruction Form

ISSUER

Your form must be received by 5.00pm (WST) Friday 20 July 2012

This is an important document that requires your immediate attention. It can only be used in relation to the shareholding represented by the registration name printed overleaf. If you are in doubt about how to deal with this form, please contact your fi nancial or other professional adviser.

Step 1: Registration Name

Please check the details provided and contact us on the number above if any of the details are incorrect. Use this form if you wish to sell ALL of your shares under the Small Shareholding Sale Facility. If you have recently bought or sold shares your holding may differ from that shown. If you have already sold all your shares in Australian-American Mining Corporation Limited, do not complete or return this form.

Step 2: Signing Instructions

By signing and returning this form, you agree to sell all your shares under the Small Shareholding Sale Facility.

Individual: Where the holding is in one name, the shareholder must sign. Joint Holding: Where the holding is in more than one name, all of the shareholders must sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the registry, please attach a certifi ed photocopy of the Power of Attorney to this form when you return it.

Companies: Where the company has a Sole Director who is also the Sole Company Secretary, this form must be signed by that person. If the company (pursuant to section 204A of the Corporations Act 2001) does not have a Company Secretary, a Sole Director can also sign alone. Otherwise this form must be signed by a Director jointly with either another Director or a Company Secretary. Please sign in the appropriate place to indicate the offi ce held.

Deceased Estate: All executors must sign and, if not already noted by the registry, a certifi ed copy of Probate or Letters or Administration must accompany this form.

Entering your contact details is not compulsory, but will assist us if we need to contact you.

Turn over to complete the form 

View your shareholder information, 24 hours a day, 7 days a week:  www.investorcentre.com

Your secure access information is:

Review your shareholding

SRN/HIN: I1234567890

Update your shareholding

Supply your direct credit instructions PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confi dential.

==> picture [145 x 35] intentionally omitted <==

Sale Instruction Form

Registration Name & Shareholder Details

Registration Name: MR JOHN SAMPLE FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

I 123456789

IND

For your security keep your SRN/HIN confi dential.

Change of address. If incorrect, mark this box and make the correction in the space to the left.

Shareholder Details: Subregister: Issuer Shares held as at 5.00pm (WST) 1234567890 on 25 May 2012:

Signature of Shareholder(s) This section must be completed.

By signing and returning this form, I/we confi rm that I/we:

• understand that my/our shares will be sold under the Small Shareholding Sale Facility.

• agree to all of the terms and conditions of the Small Shareholding Sale Facility (the “Terms and Conditions”) as enclosed with this form, and

• give the warranties, acknowledgements and agreements set out in the Terms and Conditions.

Individual or Shareholder 1 Shareholder 2 Shareholder 3 Director/Sold Director and Sole Company Director/Company Secretary Sole Director (No Company Secretary)* Secretary

• By signing here, I (insert name in full) ____ warrant that, pursuant to the Corporations Act, the company does not have a Company Secretary and that as the Sole Director I am authorised by the company to complete this form.

Contact Name Email address

Contact Daytime / / Telephone Date

Privacy Statement

Personal information is collected on this form by Computershare Investor Services Pty Limited (CIS) as registrar for the shares issuers (the issuer), for the purpose of maintaining registers of shareholders, facilitating distribution payments and other corporate actions and communications. Your personal information may be disclosed to our related bodies corporate, to external service companies such as print or mail service providers, or as otherwise permitted by law. If you would like details of your personal information held by CIS, or you would like to correct information that is inaccurate, incorrect or out of date, please contact CIS. In accordance with the Corporations Act 2001, you may be sent material (including marketing material) approved by the issuer in addition to general corporate communications. You may elect not to receive marketing material by contacting CIS using the details provided above or email privacy@computershare.com.au

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