Your search Harold A. Durel, Plaintiff-appellant, v. the Southern Pacific Railroad, Defendant-appellee, Aetnacasualty & Surety Company, Intervenor-appellee.no. 31028 Summary Calendar.**rule 18, 5th Cir.; See Isbell Enterprises v. Citizens Casualty Co. of N.y., 431 F.2d 409, Part I (5th Cir. 1970) did not match any document.