Your search Morse/diesel, Inc. and Helena Erectors, Incorporated, Plaintiffs,helena Erectors, Incorporated, Plaintiff-appellee, v. Trinity Industries, Inc., Aetna Insurance Co. and Moshersteel Company, Defendants,trinity Industries, Inc., Defendant-appellee.trinity Industries, Inc., Third-party Plaintiff-appellee, v. John Portman Assoc., Weidlinger Assoc., Inc., Helenaerectors, Incorporated, St. Lawrence Cement Co., A.j.mcnulty & Co., Inc., Blakeslee Prestress, Inc. Andmorse/diesel, Inc., Third-party Defendants,helena Erectors, Incorporated, Third-party Defendant-appellee.appeal of St. Lawrence Cement Co., A.j. Mcnulty & Co., Inc.and Blakeslee Prestress, Inc., Third-partydefendants-appellants did not match any document.