J. Leonard Replogle

Jacob Leonard Replogle, usually known as J. L. Replogle, (May 6, 1876 in New Enterprise, Pennsylvania – November 25, 1948) was a wealthy American industrialist.

He began his career as a general supervisor at Cambria Steel Co., rising through the ranks to become head of Replogle Steel Co. In 1918, Forbes magazine named him one of the wealthiest persons in the United States.

In 1905, he married Blanche Kenley McMillen.

During World War I, he directed the steel supply for the War Industries Board, organizing the Sun Shipbuilding and Drydock Company of Chester with William Sproul, Samuel Vauclain of the Baldwin Locomotive Works, T. Coleman du Pont, and Edward V. Babcock of Pittsburgh. He did similar work for the War Production Board in World War II.

He was also head of the Vanadium Corporation of America, with Charles M. Schwab. In August 1942, the U.S. Army Corps of Engineers established the Manhattan Engineer District (MED), also known as the Manhattan Project, to develop atomic weapons and to procure the raw materials, principally uranium, necessary for their production. The MED contracted the Vanadium Corporation of America and the U.S. Vanadium Corporation (owned by Union Carbide) to procure and process uranium bearing ore.

While in Paris in 1931 he and a friend, Paulding Fosdick, invented a form of the game bridge which they called Towie. In 1935, he sought to make Towie a popular game in the United States, with limited success.

The J. Leonard Replogle Elementary School in Loysburg, Pennsylvania is named after him.

In his later years he entered into Republican politics. He was Presidential Elector for Pennsylvania, 1920; a delegate to Republican National Convention from Florida, 1932, 1936, 1940, and 1944; and a member of Republican National Committee from Florida, 1940.