DIATREME RESOURCES LIMITED — Capital/Financing Update 2007

Nov 4, 2007

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DIATREME RESOURCES LIMITED ABN 33 061 267 061

Subsidiary Companies: Lost Sands Pty Ltd ABN 27 101 269 747 Chalcophile Resources Pty Ltd ABN 41 090 712 217, Regional Exploration Management Pty Ltd ABN 55 093 739 336

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ASX Code: DRX

Company Announcement Office Australian Securities Exchange Level 4, 20 Bridge Street Sydney NSW 2000

5 November 2007

EXPIRY OF UNLISTED OPTIONS

The Company’s 3,000,000 unlisted options, exercisable at $0.47 on or before 1 November 2007, have expired with none being exercised.

By order of the Board

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Lawrence J Litzow Corporate Secretary

Registered / Principle Office Level 2, 87 Wickham Terrace, Spring Hill, Qld, 4000 PO Box 10288 Brisbane Adelaide Street Queensland 4000

Telephone: 61 7 3832 5666 Facsimile: 61 7 3832 5300

Email: manager@diatreme.com.au www.diatreme.com.au