Bechtel Plant Machinery, Inc., Monroeville, Pa., is being awarded a $303,472,860 modification to previously awarded contract for naval nuclear propulsion components. Work will be performed in Monroeville, Pa. (72.3 percent), and Schenectady, N.Y. (27.7 percent). Contract funds will not expire at the end of the current fiscal year. No completion date or additional information is provided on contracts supporting the naval nuclear propulsion program.