 ... thickness, separated by thin beds of limestone or shale, in the series. Usually one and sometimes two of these beds .at a given section are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable...  Economic Geology - Page 276by Heinrich Ries - 1916 - 856 pagesFull view - About this book
 | United States. Bureau of Mines - Digital images - 1909 - 908 pages
...are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable beds varies from 65 to 80 per cent, with an average of 72 per cent. DEVELOPMENT AND PRODUCTION. The newness of the field, the lack of transportation facilities,... | |
 | William R. Calvert - Coal - 1909 - 556 pages
...are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable beds varies from 65 to 80 per cent, with an average of 72 per cent. DEVELOPMENT AND PRODUCTION. The newness of the field, the lack of transportation facilities,... | |
 | Geological Survey (U.S.) - Geology - 1909 - 248 pages
...are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable beds varies from 65 to 80 per cent, with an average of 72 per cent. DEVELOPMENT AND PRODUCTION. The newness of the field, the lack of transportation facilities,... | |
 | United States. National Conservation Commission - 1909 - 862 pages
...are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable beds varies from 65 to 80 per cent, with an average of 72 per cent. DEVELOPMENT AND PRODUCTION. The newness of the field, the lack of transportation facilities,... | |
 | Charles Richard Van Hise - Natural resources - 1910 - 476 pages
...are workable, and probably some of the others will eventually be mined. The lime phosphate content in the workable beds varies from 65 to 80 per cent, with an average of 72 per cent." Blackwelder gives a more detailed description of that portion of the western deposits... | |
 | Heinrich Ries - 1916 - 1358 pages
...the Quadrant formation of the Melrose and Elliston district. The phosphate forms beds interstratified with limestones and shales, the series in all cases...analyses will serve to show its composition: ANALYSES OF WESTERN PHOSPHATES 1. Main bed, Cokeville, Wyo.; 2. Crawford Mts., Utah; 3. Between Morgan and Devil's... | |
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