SUBSIDIARIES OF USMX, INC. FORM 10-K - December 31, 1996 EXHIBIT 22 Percent Subsidiary Place of Incorporation Owned - ---------------------------------- ---------------------- --------------- USMX of Alaska, Inc. Alaska 100% USMX of Montana, Inc. Montana 100% USMX of Nevada, Inc. Nevada 100% USMX of Utah, Inc. Delaware 100% USMX Mining, Inc. British Columbia 100% MXUS S.A. de C. V. Mexico 100% USMX de Costa Rica C. V. Costa Rica 100% CompaOia Minera USMX de Chile Limitada Chile 100% Southern Gold Resources (USA), Inc. Colorado 80% Mega Minerals S. A. Ecuador 100%