Market Regulation Services - Trading Halt - Castle Rock Petroleum Ltd. - RCK.A, RCK.B

Jul 19, 2007


    VANCOUVER, July 19 /CNW/ - The following issues have been halted by
Market Regulation Services (RS):

    Issuer Name: Castle Rock Petroleum Ltd.
    TSX-V Ticker Symbol: RCK.A, RCK.B
    Time of Halt: 09:00 EST
    Reason for Halt: Pending News

For further information:

For further information: Market Regulation Services Inc., (416)
646-7299