1 EXHIBIT 21 SUBSIDIARIES OF ALATENN RESOURCES, INC. AS OF DECEMBER 31, 1994 SUBSIDIARY STATE OF INCORPORATION OWNERSHIP ---------- ---------------------- --------- Alabama-Tennessee Natural Gas Company Alabama 100% Warrior Basin Gas Company Alabama 100% Vulcan Oil and Gas Company Alabama 100% Central Gas Company Alabama 100% Tennessee River Development Company Alabama 100% North Mississippi Natural Gas Corporation Mississippi 100% Hardin County Gas Company Tennessee 100% AlaTenn Energy Marketing Company Alabama 100% Tennessee River Intrastate Gas Company Alabama 100% AlaTenn Credit Corp. Alabama 100% AlaTenn Pipeline Company Alabama 100% Ryder International Corporation Alabama 100%