Theriot-Modec Enterprises, Inc. (TMEI), a marine construction company located in Larose, La., recently signed a contract with Energy Ammonia Corporation, a subsidiary of Energy Transportation Corporation of New York City, for construction of an 8,000-ton, oceangoing anhydrous ammonia barge. The barge will have an overall length of 420 feet, beam of 78 feet, and depth of 28 feet.

Chicago Bridge and Iron Company will assist TMEI in the vessel's construction by furnishing the cargo tanks and installing the associated machinery. Delivery of the barge by TMEI is scheduled for mid-January 1982, at which time it will be towed to CBI's facility in Memphis, Tenn., for completion. Upon delivery by CBI, the barge will be chartered to International Mineral & Chemical, Inc. to transport anhydrous ammonia from Louisiana to Florida.