RUHRGAS BUYS 20% INTEREST IN UNIT OF TENNECO

German gas supplier Ruhrgas AG, Essen, has bought a 20% interest in Tenneco Energy Resources Corp. (TERC) from Tenneco Gas, Houston. Ruhrgas sees the move as a way of learning about the U.S. natural gas market, as well as a way of making money. "The U.S. gas market will offer good margins over the next few years," a spokesman said. For Tenneco the deal represents a chance to look for joint ventures with Ruhrgas in western Europe. The partners have set up a working group to study prospects.