Samuel S. BEVARD et al., t/a Silver Hill Concrete Co., Appellants, v. HOWAT CONCRETE COMPANY, Inc. No. 23309.United States Court of Appeals, District of Columbia Circuit.Argued March 13, 1970. Decided July 9, 1970. Mr. Leonard B. Sussholz, Washington, D.C., for appellants. Mr. Harry L. Ryan, Jr., Washington, D.C., for appellee. Before TAMM, MacKINNON and ROBB, […]