BLACK ROCK MINING LIMITED — Share Issue/Capital Change 2012

Apr 25, 2012

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24 April 2012

Company Announcements Office By e-Lodgement Australian Securities Exchange

Dear Sirs,

ISSUE OF GREEN ROCK ENERGY LIMITED SHARES – SECONDARY TRADING NOTICE – NOTIFICATION PURSUANT TO PARAGRAPH 708A(5)(e) OF THE CORPORATIONS ACT 2001 ("Act")

On 12 April 2012, Green Rock Energy Limited ( ASX:GRK ) (" Company ") announced its intention to undertake a placement of up to 158,000,000 fully paid ordinary shares at an issue price $0.009 per share to raise up to $1,422,000,000 (before issue related costs) (“ Placement ”).

On 24 April 2012, the Company allotted and issued the Placement, being 157,000,000 fully paid ordinary shares in the capital of the Company at $0.009 (" Tranche 1 Shares ") to sophisticated and institutional investors to raise $1,413,000 for the purposes of working capital.

Secondary Trading Exemption

The Act restricts the on-sale of securities issued without disclosure, unless the sale is exempt under Sections 708 or 708A. By the Company giving this notice, sale of the Shares noted above will fall within the exemption Section 708A(5) of the Act.

The Company hereby notifies ASX under paragraph 708A(5)(e) of the Act that:

• (a) the Company issued the Tranche 1 Shares without disclosure to investors under Part 6D.2 of the Act;

• (b) as at 24 April 2012 the Company has complied with the provisions of Chapter 2M of the Act as they apply to the Company, and Section 674 of the Act; and

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• (c) as at 24 April 2012 there is no excluded information for the purpose of Sections 708A(7) and (8) of the Act in relation to the Company.

Yours faithfully, Green Rock Energy Limited.

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Nigel Hodder Company Secretary