Sand. No. 12633, Silica Sand Producers' Trailic Association et al. v. Cleveland, Cincinnati, Chicago & St. Louis Railway Company, director general, as agent, et. al.: [no. 12641, same v. Chicago, Burlington & Quincy Railroad Company, director general, as agent, et al.; no. 12642, same v. Chesapeake & Ohio Railway Company, director general, as agent, et al.]; decided June 15, 1922; report [and order] of commission.