Robert Henry Jeffrey died in Mexico on 31st January, 1949, at the age of 76.

In 1895 he took up the appointment of assistant general manager of the Arminius pyrites mine in Louisa Co., Virginia, and also held the position until 1897 of general manager of the Blue Ridge Gold Mines, Ltd. For the next two years he was assistant to the general manager of Pines Altos mines at Chihuahua, Mexico, and in 1900 was general manager of Milan copper mines in New Hampshire, U.S.A. He was employed by the Globe Minerals Exploration Co. from 1901 to 1902 as general manager of copper mines in Arizona, and was general manager from 1902 to 1904 of Santa Gertrudis Mines, Ltd., at Oaxaca, Mexico.

Mr. Jeffrey spent the rest of his life in Mexico: from 1909 he was general manager of Avino Mines of Mexico, Ltd., and during the period 1914-1916 did consulting work. He joined Mazapil Copper Co., Ltd., in 1916 and was connected with that company until 1939 as manager and managing director. From 1917 to 1930 he held the position of British Vice-Consul at Saltillo, and in 1918 was acting American Consul. For two years from 1925 to 1927 he held a directorship of the Bank of Mexico.

Mr. Jeffrey was elected to Membership of the Institution in 1904.

Vol. 59, Trans IMM 1949-50, p.?

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