"Vannoy Hartrog Manning"@en . . . . "Van H. Manning"@en . . . . "2"^^ . "Van H. Manning"@en . . . . . . . "69150523"^^ . . . . . . . . . . . . . . "1920"^^ . . . . . "Manning,"@en . "2"^^ . . . . . . . "Horn Lake, Mississippi, U.S."@en . . . . . . "1932-07-13"^^ . "Van H. Manning or Vannoy Hartrog Manning (1861 \u2013 July 13, 1932) was the 2nd director of the U.S. Bureau of Mines and was instrumental in developing chemical warfare defense technologies during World War I."@en . . . . . "1898"^^ . . . . . . . "Washington, D.C., U.S."@en . . . . . . . . . . . . . "Forest Hills, Queens, New York City, New York, U.S."@en . . . "1118441072"^^ . . "1932-07-13"^^ . "Van H. Manning or Vannoy Hartrog Manning (1861 \u2013 July 13, 1932) was the 2nd director of the U.S. Bureau of Mines and was instrumental in developing chemical warfare defense technologies during World War I."@en . . "Emily S. Stevens"@en . . . . . . . . . . . . . . . . "6015"^^ . "Van H. Manning (engineer)"@en . . "Vannoy Hartrog Manning"@en . . ""@en . . . . . . . . "1915"^^ . . . . .