[Cases.] States Supreme Court. Tennessee, sitting at Nashville, Davidson County equity, Carbide & Carbon Chemicals Corporation v. Sara K. Carson, commissioner of finance and taxation; Roane-Anderson Company v. [same]; Diamond Coal Mining Company and Carbide & Carbon Chemicals Corporation v. [same]; Wilson-Wessner-Wilkinson Company and Roane-Anderson Company v. [same]; memorandum for United States, intervenor.