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Applying these figures to Table 3 , it appears that for machines crushing to 4 in or less , power consumption per ton is less in the jaw crusher . In coarser crushing to 5–12 in , power per ton crushed is less for gyratory than for jaw ...
... on cop per are based on the Eng & Min Jour quotations 6 Less a deduction of 1 1 / 2 € per oz 6 Nothing paid for lead less than 5 % wet assay 7 Nothing paid for copper less than 1 / 2 % 8 Add 10 % to base charge for excess value over ...
For gold in truck shipments and shipments of less than 10 ton , deduct $ 1 per oz from above prices . SILVER ; no payment if less than 1 oz per ton ; from 1 to 5 oz per ton , 50 % paid for ; over 5 but not over 10 oz per ton , 65 % paid ...
Apa yang dikatakan orang - Tulis resensi
LibraryThing ReviewUlasan Pengguna - wackyvorlon - LibraryThing
I only have the second volume of this work, and I love it! Found at a local Value Village, it is filled with fascinating information. Details of all aspects of mine engineering, including compressed air, ventilation, and supporting structures. Baca ulasan lengkap
Conditions Methods in General
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