Through its Trinidad and Tobago affiliates, Kerr-McGee Oil & Gas Corp., Oklahoma City, (NYSE: KMG) has acquired a 25% interest in the southern part of Block 2(c) retained exploration area and a 30% interest in Block 3(a), offshore Trinidad and Tobago. The blocks are adjacent to the Angostura Field in depths ranging from 150 to 300 feet of water. Partners in Block 2(c) are BHP Billiton (39% working interest) and Talisman (36% working interest). Partners in Block 3(a) are BHP Billiton (30% working interest), Talisman (30% working interest) and Total (10% working interest). BHP Billiton operates both blocks. With the addition of these blocks, Kerr-McGee holds interests in more than 340,000 gross acres offshore Trinidad and Tobago.