Transactions . Plate I.—Allis-Chalmers Company, Ball Plate II.—Snyder Automatic Ore Sampler. Silver-Cobalt Ores at Copper 289 above. Payment is made on these combined weights, less themoisture. Two complete weighings of the shipment are thus made whichshould agree closely. This gives the shipper a check on hisweights. Thus the gross weight of ore in sacks should be thesame as the weight of:— (a) Milled ore including sample. (b) Sacks. (c) Water lost on drying plates. A sample for the final determination of moisture is taken bytube-sampler from each pailfull as it is removed from
Transactions . Plate I.—Allis-Chalmers Company, Ball Plate II.—Snyder Automatic Ore Sampler. Silver-Cobalt Ores at Copper 289 above. Payment is made on these combined weights, less themoisture. Two complete weighings of the shipment are thus made whichshould agree closely. This gives the shipper a check on hisweights. Thus the gross weight of ore in sacks should be thesame as the weight of:— (a) Milled ore including sample. (b) Sacks. (c) Water lost on drying plates. A sample for the final determination of moisture is taken bytube-sampler from each pailfull as it is removed from the sample-chamber. This moisture sample is cut down to three samples ofthree kilos, each. The result thus obtained is used in the cal-culation of dry weight. The weight of water lost on the dryingplates can be calculated by taking the difference between this andthe first moisture result. The main sample is now thrown on the concrete floor of thesample-room, and after being shovelled over twice, is coned andquartered into two halves called Sample No.
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Keywords: ., book, bookcentury1800, booksubjectmineralindustries, bookyear1895
