Lieut. Col. William L. Sibert, another of the Army engineers who was made a member of the Canal Commission, was graduated from West Point in 1884 and was made a lieutenant of engineers. From 1892 to 1894 he was assistant engineer in charge of the construction of the ship channel connecting the Great Lakes. The four years following he was in charge of the river and harbor work in Arkansas, and following that, spent one year teaching civil engineering in the Engineering School of Application. He then went to the Philippines as chief engineer of the Eighth Army Corps and became chief engineer and general manager of the Manila & Dagupan Railroad. From 1900 to 1907 he was in charge of the Ohio River improvements between Pittsburgh and Louisville. As division engineer of the Atlantic division of the Panama Canal he was in charge of the construction of the Gatun locks, Gatun Dam, and the breakwaters at the Atlantic entrance to the canal. Civil Engineer Harry H. Rousseau, of the United States Navy, was appointed a member of the Isthmian Canal Commission at the same time that Chief Engineer Goethals was selected to head the organization. He had had much experience in engineering work prior to the appointment and was a personal appointee of President Roosevelt, with whom he had come in contact when he was serving in the Bureau of Yards and Docks of the Navy Department when Mr. Roosevelt was assistant secretary of that Department. He entered the employ of the United States through the civil service, having been appointed a civil engineer in the Navy with the rank of lieutenant, after a competitive examination in 1898. For four years he was an engineer of the bureau of which he afterwards became chief, and for four years following, from 1903 to 1907, he was engineer of the improvements of Mare Island Navy Yard, California. The duties of Commissioner Rousseau were changed from time to time, and he was finally given charge of the work of constructing the terminals at the ends of the canal. At the same time he was made assistant to the chief engineer, having charge of all mechanical questions arising on the canal.