Market Regulation Services Inc.

Market Regulation Services Inc.

July 19, 2007 09:16 ET

Market Regulation Services Inc.: Halt: Castle Rock Petroleum Ltd., Doublestar Resources Ltd.

VANCOUVER, BRITISH COLUMBIA--(Marketwire - July 19, 2007) - The following issue(s) have been halted on the TSXV today:



Company: Castle Rock Petroleum Ltd.
TSXV Symbol: RCK.A, RCK.B
Reason: Company request pending news
Halt Time: 9:00 est


Company: Doublestar Resources Ltd.
TSXV Symbol: DSR
Reason: Company request pending news
Halt Time: 9:00 est


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