Background
LEONARDOS, Othon Henry was born on June 8, 1899 in Niterói, Rio de Janeiro, Brazil.
LEONARDOS, Othon Henry was born on June 8, 1899 in Niterói, Rio de Janeiro, Brazil.
Educated Colégio Alfredo Gomes, Rio de Janeiro. Civil Engineer, University do Brasil, 1919, Ph.D., 1925.
Assistant, geological map project of federal district, 1918-1919. Engineer, geology and mineralogy service, 1920-1921, Morro do Castelo levelling project, 1921-1922. Assistant, in mineralogy, engineering school.
University do Brasil, 1922-1925, assistant professor, of geology. 1925-1937, 1942-^43; engineer, division of mineral development, 1933-1939. Professor, of mineralogy and geology, Escola Técnica do Exército, 1937.
Head, TocantinsAraguaia science expedition, 1938. Professor., Museu Nacional, 1939. Institute Lafayette, 1941-1943.
Director, review Mineragáo e Metalurgia.
Member national edn. board, 1926-1927. Member national council of mines and metallurgy. Member: Academy Brasileira de Ciencias, Geological Society of America, Society of Economics Geologists, American Institute of Mining and Metallurgical Engineers, Clube de Engenharia, Institute Brasileira de Mineragáo e Metalurgia, Associagáo Brasileira de Imprensa, Associacáo Brasileira de Educagáo (founding mem)., Brazil-United States Cultural Institute.
