Began as farmer in O., 1912-1914. Teacher of engineering, agronomy, Tennessee Vail Agricultural School, 1915. Assistant professor agronomy, state agronomist, University of Delaware and Delaware Agricultural Experiment Station, 1915-1917.
Agricultural engineer, Virginia Polytechnic Institute, doing food production work, 1917-1919. Head department of agricultural engineering, Alabama Polytechnic Institute, Alabama Agricultural Experiment Station, 1919-1936. Regional engineer, Soil Conservation Service, unites states department of Agriculture, 1936-1937.
Assistant chief of research, 1937-1938, chief, 1938-1953. Formerly with Bureau Plant Industry, Soils, and Agricultural Engineering. Past head tillage machinery laboratory section agricultural engineering research branch Agricultural Research Service.
Lecturer, collaborator United States Department of Agriculture, from 1958. Received McCormick Medal for outstanding engineering contbrns. to agriculture, 1934.