BLACK ROCK MINING LIMITED — Share Issue/Capital Change 2012

Oct 18, 2012

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Green Rock Energy Limited ABN 59 094 551 336

Unit 10, 38 Colin Street West Perth WA 6005 Australia

ASX

Announcement

PO Box 1177 West Perth WA 6872 Australia

Tel (+61 8) 9482 0482 Fax (+61 8) 9482 0499 Email info@greenrock.com.au Web www.greenrock.com.au

19 October 2012

Proposed Issue of Options to Directors

Pursuant to Listing Rule 3.10 Green Rock Energy Limited wishes to advise that, subject to shareholder approval at its next General Meeting, it proposes to issue a total of 6,000,000 ordinary share options to Directors as follows:

DIRECTORS	NO. OF OPTIONS
Mr Richard Beresford	3,000,000
Mr Gabriel Chiappini	1,500,000
Dr Jörg Baumgärtner	1,500,000

This proposed issue of options is a performance incentive for the future and to give recognition to the value that will be derived from the Directors concerned for contribution to the Company through its Board.

It is proposed that the exercise price of the options be set 50% above the closing price on the ASX of the Company’s shares on the day of the General Meeting.

The details of this proposed issue are as follows:

• ▐ Class of securities to be issued: Ordinary share options ▐ Number of securities to be issued: 6,000,000 ▐ Exercise price: Set at 50% above the closing price of the Company’s shares on the ASX on

the day of the General Meeting, rounded up to the next tenth of a cent

• ▐ Vesting conditions: Options vest 50% on 28 November 2012 and the balance on 28 November 2013 ▐ Options expire: On 28 November 2016 ▐ Consideration: Nil ▐ Purpose of issue: As a performance incentive and value recognition ▐ Shareholder approval: To be sought at the next General Meeting

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GREEN ROCK ENERGY LIMITED ABN 59 094 551 336

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ASX Announcement

Proposed Issue of Options to Directors : 19 October 2012

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Nigel Hodder Company Secretary

For more information:

• T: +61 (0)8 9482 0482 F: +61 (0)9482 0499

• E: info@greenrock.com.au W: www.greenrock.com.au

About Green Rock Energy Limited:

Listed on the ASX in 2005, Green Rock (GRK) is a geothermal and hydrocarbons explorer and developer with geothermal interests in Western Australia, South Australia and Hungary and hydrocarbons interests in Western Australia. Its key projects are:

• A 15% interest in EP417 in the Canning Basin with a right to earn up to 20% through a farm-in agreement with New Standard Energy (NSE) together with an Area of Mutual Interest Agreement for other potential opportunities including the Seven Lakes Special Prospecting Area awarded to NSE

• The beneficial right to a 20% JV interest in the Backreef Area in the Canning Basin operated by Oil Basins Limited (OBL)

• An alliance with leading Australian renewable power developer Pacific Hydro for conventional geothermal power generation in GRK’s permits in the Mid West of WA and GRK’s and Pacific Hydro’s licences in the Great Artesian Basin in SA

• A joint venture with MOL in Hungary for geothermal power generation (GRK 50%)

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GREEN ROCK ENERGY LIMITED ABN 59 094 551 336