WD Pennsylvania December 1970 casesUnited States v. HaushalterUnited States v. DorrisCooper v. Valley Line CompanyMiller v. RichardsonShuber v. S. S. Kresge Co.Langfitt v. United StatesUnited States Steel Corp. v. United Mine Wkrs.Sturdevant v. Erie Lackawanna Railroad CompanyHartwell v. Allied Chemical Corp.U.S. Steel Corp. v. United Mine Workers of AmericaTorockio v. Chamberlain Mfg. Co.