 | 1867 - 398 strani
...minute is from 35 to 80. The quantity of quartz crushed per head per diem of 24 hours varies f rum 1 ton to 4 tons. The number of holes per square inch in the gratings used is from 64 to 160. The horse-power required to work each stamper is from 0'5 to 2. The quantity of water used... | |
 | 1883 - 586 strani
...from 60 to 84. The quantity of quartz crushed per head per diem of 24 hours varies from 1 ton 5 cwt. to 4 tons. The number of holes per square inch in the gratings used is from 81 to 256. The quantity of water used per stamp-head in crushing varies from 35 gallons to 770 gallons... | |
 | 1875 - 458 strani
...is from 54 to 80. The quantity of quartz crushed per head per diem of 24 hours varies from 16 cwt. to 4 tons. The number of holes per square inch in the gratings is from 80 to 180. The horse-power required to work each stamper is from 1 to 2. The quantity of water... | |
 | William Phipps Blake - 1869 - 396 strani
...strokes made by stampheads per minute is from 50 to 85. The quantity of quartz crushed per head per diem of 24 hours varies from 1 ton to 4 tons. The number...stamper-box.) The horse-power required to work each stamper is from 1 to 2. The quantity of water used per stamp-head in crushing varies from 950 gallons... | |
 | Robert Brough Smyth - 1869 - 712 strani
...thirty-five to eighty. The quantity of quartz crushed per head per diem of twenty-four hours varies from I ton to 4 tons. The number of holes per square inch in the gratings used is from 64 to 1 60. The horse-power required to work each stamper is from 0-5 to 2. The quantity of water used... | |
 | William Phipps Blake - 1869 - 400 strani
...is from 40 to 90. The quantity crushed per head per diem of 14 hours ranges from 16 hundred weight to 4 tons. The number of holes per square inch in the gratings used is from 60 to 140. The horse-power required to work each stamp-head is from 0.75 to 1.50. The quantity of water... | |
 | William Phipps Blake - 1869 - 388 strani
...is from 40 to 90. The quantity crushed per head per diem of 14 hours ranges from 16 hundred weight to 4 tons. The number of holes per square inch in the gratings used is from 60 to 140. The horse-power required to work each stamp-head is from 0.75 to 1.50. The quantity of water... | |
 | William Phipps Blake - 1869 - 400 strani
...is from 40 to 90. The quantity crushed per head per diem of 14 hours ranges from 16 hundred weight to 4 tons. The number of holes per square inch in the gratings used is from 60 to 140. The horse-power required to work each stamp-head is from 0.75 to 1.50. The quantity of water... | |
 | Robert Brough Smyth - 1869 - 694 strani
...quantity of quartz crushed per head per diem of twenty-four hours varies from 18 cwt. to 3 tons 10 cwt. The number of holes per square inch in the gratings used is from 40 to 224. (The latter number is made use of by the New North Chmes Company, at Clunes.) The horse-power... | |
 | William Phipps Blake - 1869 - 412 strani
...of quartz crushed per head per diem of 24 hours ranges from 18 hundred weight to 3 tons 3 quarters. The number of holes per square inch in the gratings used is from 64 to 140. The horse-power required to work each stamp-head is from 0.66 to 2. The quantity of water... | |
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The quantity of water used per stamphead in crushing varies from 720 gallons to 11,520 gallons per diem of 24 hours. The quantity of mercury used in the ripples per stamper is from 5 to 70 pounds. 
