1 U. S. gallon-231 cu. in.-0.134 cu. ft. 1 cu. ft.-7.481 U. S. gallons 1 British imperial gallon-277.274 cu. in.-0.16046 cu. 1 cu. ft.-6.234 imperial gallons 1 cu. ft.... 1 ton (2000 lb.). 1 ton (2000 lb.). ft. 62.42 lb. of water 32.04 cu. ft. of water 239.69 U. S. gallons THE METRIC SYSTEM 1 gram 10 hectograms. 1000 kilograms.. = 1 kilogram (Kg.) 1 ton (T.) the weight of 1 cubic centimeter of pure distilled water at a temperature of 4° cent. 1 kg.. Dry Equivalents Weight 2.8377 bushels 0.35239 hectolitres 28.34954 grams 453.59 grams 907.18 kg. 0.035274 oz. avoir.-0.00220 lb. 35.27392 oz. avoir.-2.2046223 lb. 1. 102311 short ton-0.9842 long T. 64.799 mg. 1.55518 grams 31.1035 grams 0.37324 kg. 15.4324 grains-0.64301 dwt. 0.03215 oz. Troy 32. 15076 oz. Troy-2.67923 lb. Troy 1 oz. Troy per ton of 2000 lb.-34.285 grams per metric ton Elimination of Middling by Calculation.-This is based on the assumption that the return of the middling to the head of the concentration system does not change the subsequent assay value of the concentrate and tailing. The weights of the various products and the assay of the middling need not be known. Let X and Y = percentage weights of concentrate and tailing respectively when middling is eliminated. = assay values of head concentrate and tailing respectively. percentage of total values in concentrate and tailing when = Let h, c, t, Let x and y middling is eliminated. 100 (h с t 100 (h t)c 100 (ch) с 100 (c t h)t h(ct) Power. I.H.P.-33,000 foot-pounds per minute 760 millimeters, or 29.922 inches of mercury column = 10.333 meters, or 33.901 feet of water column = 14.696 pounds per square inch 1.0333 kilos per square centimeter. TABLE 31.-MISCELLANEOUS FIGURES ON THE WEIGHT OF BROKEN ORE (Richards "Ore Dressing", Mine ore coming to Mill, North Star Mining Co. "Blue ground" (altered peridotite) as it comes Broken quartz as it comes from the Jumpers' Broken quartz conglomerate as it comes from the Material from gravity stamps. 95 36 Material from gravity stamps, with the slimes removed. Quartz stamped dry through 40 mesh and charged dry into vats at the Victoria mill, Hauraki peninsula, New Zealand. |