Letter of John Hays Hammond, 1900.
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Engineer. From the description of Letter of John Hays Hammond, 1900. (Unknown). WorldCat record id: 79450745 John Hays Hammond, Sr., (1855 March 31-1936 June 8) was a mining expert and superintendent of mines in California and Mexico, 1881-1893; worked for Cecil Rhodes and others in South Africa, 1893-1899; consultant in England, 1896-1900, and in Mexico, 1900; general manager and consulting engineer for Guggenheim Exploration Co., 1903-1907; chairman Engineers, Exploration ...