Bulletin Volume 78-79

Bulletin Volume 78-79

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ...are also present." ' A Samples fi16 to 1119 inclusive, of 30-40 lb. each were sent from the Sulphur Bank mine by Mr. W. G. Luckhardt, superintendent, through the courtesy of Mr. G. T. Ruddock, owner. As they were received just as the author's experimental. work was being brought to a close, lack of time prevented investigating them, except for a few preliminary tests on 18, which was selected as typical of the group and especially because of the notable proportion of native sulphur carried.. 'Becker, G. F., Geology of the quicksilver deposits of the Pacific Slope: U. S. G. S., Mon. XIII, p. 463, 1888., SCREEN ANALYSES. The following tabulation gives the results of screen analyses of some of the ores and products tested: Summary of screen analyses. _ By an examination of the table of screen analyses, herewith, the following will be noted: Oat Hill fines (Sample 1t1)---43% of the total value is in--80; while over 26% is in--20 + 48; balance being about equally distributed between + 20 and---48 + 80. Etna bumper tailings (Sample 11:3)--practically 80% of total value is about equally divided between--20 + 48 and--80, with the latter in the lead. Balance about equally divided between + 20 and--48 + 80. Etnaflotation tailings from test on bumper tails (--100) (Sample #3K5A) _---50% of total value is in----200 and a little over 33% in + 150. Parkfield, low grade (Sample fi5)--45% of total value is in--80, and 27% in--20 + 48; with 67% of balance in + 20. St. J ohn's (Sample fli8)--a little over 50% of total value is in-_--20, and nearly 25% in---80; with 90% of balance in--20-1-48. Cambria (Sample j$9)--over 50% of total value is in--40, and about 33% in + 20. ' Goldbanks (Sample #10) ore crushed to-16 n1esh--nearly...
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Product details

  • Paperback | 224 pages
  • 189 x 246 x 12mm | 408g
  • United States
  • English
  • black & white illustrations
  • 123680869X
  • 9781236808691