MUELLER INDUSTRIES, INC. List of Subsidiaries State or Country Subsidiary * of Incorporation Mueller Brass Co. Michigan Mueller Industrial Realty Company Michigan Itawamba Industrial Gas Company, Inc. Mississippi Streamline Copper & Brass Ltd. Canada Mueller Plastic Holding Company, Inc. Ohio Mueller Plastic Corporation Delaware U-Brand Foundry, Inc. Delaware U-Brand Machine Shop, Inc. Delaware Mueller Formed Tube Company, Inc. Delaware Mueller Copper Tube, Inc. Delaware Mueller Streamline Co. Delaware Mueller Refrigeration Products Company, Inc. Delaware Mueller Impacts Company, Inc. Delaware Mueller Brass Forgings Company, Inc. Delaware Mueller East, Inc. Delaware Mueller West, Inc. Delaware Mueller Copper Fittings Company, Inc. Delaware Mueller Streamline FSC, Ltd. Virgin Islands Arava Natural Resources Company, Inc. Delaware United States Fuel Company Nevada King Coal Company Utah Utah Railway Company Utah Canco Oil & Gas Ltd. Alberta, Canada Aegis Oil & Gas Ltd. Alberta, Canada Bayard Mining Corporation Delaware Washington Mining Company Maine Amwest Exploration Company Delaware USSRAM Exploration Company Maine Richmond Eureka Mining Company (81%) Maine Ruby Hill Mining Company (75%) Maine White Knob Mining Idaho Arava Exploration Company Colorado Summit Systems, Inc. Delaware Kennet Company, Ltd. Bermuda Mining Remedial Recovery Company Delaware Carpentertown Coal & Coke Company Pennsylvania USS Lead Refinery, Inc. Maine Leon Water Enterprises, Inc. (50%) Texas Alaska Gold Company (85%) Delaware Macomber Construction Company Ohio Macomber Incorporated Ohio Sharon Building & Land Corporation Delaware * All subsidiaries are 100% owned, except as shown.