PTR MINERALS LTD — Capital/Financing Update 2009

May 12, 2009

MARKET RELEASE

13 May 2009

PETRATHERM LIMITED

TRADING HALT

The securities of Petratherm Limited (the "Company") will be placed in pre-open at the request of the Company, pending the release of an announcement by the Company. Unless ASX decides otherwise, the securities will remain in pre-open until the earlier of the commencement of normal trading on Friday, 15 May 2009 or when the announcement is released to the market.

Security Code: PTR

ńager, Issuers (Adelaide)

s:\adelaide companies\ade-code n-r\ptr - petratherm limted\ptr2009.05.13mr-jn.doc

Petratherm Ltd

105-106 Greenhill Road, Unley, SA 5061 Tel: +61 8 8274 5000 Fax: +61 8 8272 8141 Website www.petratherm.com.au Email admin@petratherm.com.au A.C.N. 106 806 884 A.B.N. 17 106 806 884

13 May 2009

Mr J Nelson Manager, Issuers (Adelaide) ASX Limited Level 1 89 King William Street ADELAIDE SA 5000

Dear Justin,

TRADING HALT REQUEST

Petratherm Limited formally requests that you grant a trading halt on the entity's securities and in accordance with ASX Listing Rule 17.1 the following Information is provided.

The Company intends to make an announcement regarding a capital raising by way of a placement with a broker and wishes to use this time to facilitate negotiations.

The Company further requests that the trading halt be granted for the maximum allowable period permissible under ASX's market rules. The Company will update the market as soon as the negotiations regarding the placement have been finalised.

The Company is not aware of any reason why the trading halt should not be granted.

Yours sincerely,

Denald Auguens

DONALD STEPHENS COMPANY SECRETARY