Decisions. Union Electric Company of Missouri. In matter of Union Electric Company of Missouri and Union Electric Company of Illinois and International Union of Operating Engineers, Stationary Engineers Local Union No. 148; in matter of Union Electric Company of Missouri and Tri-State Utility Workers Union; in matter of St. Louis County Gas Company and International Union of Operating Engineers, Stationary Engineers Local Union No. 148, cases nos. R-2543 to R-2545; certification of representatives, Aug. 27, 1941.