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New York: The Mechanical Gold Extractor Co., 1893. Paperback. A scarce imprint not recorded on Trove. Page 11 refers to "Instances of Success" recounting the "Australian ore from the Ravenswood Mine, which fails to yield more than 25 per cent. of its Gold at an ordinary stamp mill, yielded upward of ninety per cent to the Crawford Mill, and this without roasting or chemical treatment of any kind." Mount Morgan is also mentioned. Canadian gold pp 13. P 15. reprints written testimonials from Helena Montana; Nova Scotia, the Irish Geological Society & New Mexico. "Testimonials": pp 20-27; "Statement of gold ores treated at the works of the Mechanical Gold Extractor Co. ... N.Y. City": pp [14]-17 lists metals treated of ores from Virginia, Georgia, North Carolina, Colorado, New Mexico, Arizona, Oregon, Wyoming, Kansas, S. Dakota, Iowa, San Salvador, Nicaraugua (sic) and Columbia (sic). This edition not cited on OCLC. OCLC: 932851574 cites 2 copies in Canada of 27pp. The "computer file" at OCLC:… Read More