Bachelor of Science Sheffield Science School, Yale, 1906, Engineer of Mines, Columbia School Mines, 1909.
Scout engineer Bolen Darnell Coal Company, 1914, William Braden & Andes Exploration Company, Chile, 1915, engineer, mine superintendent, 1916-1918. Mine manager Santiago Mining Company. Representative Anaconda Copper Mining Company, Santiago, 1919-1925.
Railroad superintendent Andes Copper Mining Company, 1925-1927, Allied Chemical and Dye Corporation, 1927-1930.
Assistant to president Solvay Process Company. New York City, 1927-1930.
Beryllium Company of America, 1930-1932, Union Sulphur Company, 1932-1934, Beryllium Products Company, 1934-1935. Assistant to president Freeport Sulphur Company, 1935-1941, vice president, 1941-1949, retired.
Vice-president, director Sulphur Export Corporation, New York City, retired December 31, 1949.
Former vice president, treasurer American Arbitration Association
Clubs: Cloud, Mining, University, Explorers, Yale.
Married Margaret Tomlinson, May 24, 1922. Children: Margaret G. Yingling, Martin B. Churn drill foreman Chile Exploration Company.