Underlain

PennzEnergy, Sonat Form New Mexico Joint Venture

PennzEnergy Co. and Sonat Exploration Co. formed a joint ventureto develop mineral interests underlain by coal bed methane at the700,000-acre Vermejo Park Ranch in northeast New Mexico.PennzEnergy has held the bulk of the mineral rights since 1970.

March 29, 1999

PennzEnergy, Sonat Form New Mexico Joint Venture

PennzEnergy Co. and Sonat Exploration Co. formed a joint ventureto develop mineral interests underlain by coal bed methane at the700,000-acre Vermejo Park Ranch in northeast New Mexico.PennzEnergy has held the bulk of the mineral rights since 1970.

March 23, 1999