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John Michael Callow

mining engineer , metallurgist

John Michael Callow, British mining engineer, metallurgist. Awarded Douglas medal by American Institute Mining and Metallurgical Engineers, 1925, for achievements in non-ferrous metallurgy. Mason. Episcopalian.

Background

Callow, John Michael was born on July 7, 1867 in Northrepps, Norwich, Norfolk, England. Son of Michael John and Emily (Neave) Callow.

Education

Educated in England; came to the United States, 1890.

Career

Engineer and draftsman with Stearns, Roger Manufacturing Company, 1892-1893. Engineer Metallic Extraction Company, 1894. Operating mines and mills in San Juan Company, Colorado, 1895-1896.

On engineering staff Samuel Newhouse, 1898-1901. Private practice, 1901-1906, inventing Callow settling tank and Callow traveling belt screen. President and manager General Engineering Company, New York, since 1906.

Designed and built 500-ton plant for National Copper Company, Mullan, Idaho, installing pneumatic flotation cells, 1912. Designing and construction engineer, Mount Isa Mines, Australia, 1928-1931. Originator of pneumatic flotation in treatment of ores.

Awarded 18 patents.

Membership

Mason. Episcopalian.

Connections

Married Roberta More, 1893. Children: Bessie Roberta, Margaret Roper More, Francis Marie, Michael John.

father:
Michael John Callow

mother:
Emily (Neave) Callow

spouse:
Roberta More

children:
Bessie Roberta Callow

Margaret Roper More Callow

Francis Marie Callow

Michael John Callow