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amount analyses Apparent Average bore hole Bureau of Mines calories cartridge caused cent chairman charge Class coal committee compression considerable Consistency containing cubic centimeters danger Date deposits determined DEVELOPED Distance drill Duration duty electric electrodes established examination expansion of bore experience explosion fall feet fired first-aid flame furnace gabbro give given grams Heat ignition ilmenite inches Including Indicator injury iron July kilograms per square LEAD BLOCKS lease less limit magnetite matter maximum meters Methane method Millimeters miner necessary negligence Number obtained operator original wrapper passed possible pounds powder practice present PRESSURE PRODUCTS quantity rate of detonation reason reduced represent Result rock roof sample separating shot speed square centimeter steel suggestions surface swing taken TEST tion titaniferous titanium trials upper VOLUME Weight
Σελίδα 69 - ... shall be appointed by the president, with the ' approval of the executive committee, at least within thirty (30) days following the holding of the annual meeting.
Σελίδα 31 - Mining and treatment of feldspar and kaolin in the southern Appalachian region, by AS Watts. 1913. 170 pp., 16 pis., 12 figs. BULLETIN 56.
Σελίδα 57 - Ib. or more shall be collected. The gross sample should contain the same proportion of lump coal, fine coal, and impurities as is contained in the coal sampled. When coal is extremely lumpy, it is best to break a proportional amount of the lumps before taking the various increments of a sample.
Σελίδα 19 - placer claim," as here used, is meant ground within defined boundaries which contains mineral in its earth, sand or gravel ; ground that includes valuable deposits not in place, that is, not fixed in rock, but which are in a loose state, and may in most cases be collected by washing or amalgamation without milling.
Σελίδα 34 - V) by depositing each shovelful of coal on top of the preceding one, and then formed into a long pile in the following manner : The sampler shall take a shovelful of coal from the conical pile and spread it out in a straight line (Figs.
Σελίδα 59 - Columbia, fail to prosecute faithfully and diligently the work in accordance with the specifications and requirements of this contract, then, in either case, the...
Σελίδα 19 - December, 1912.) Excessive Ground. A mining location duly made according to the mining laws is not invalid where the locator includes within the boundaries of his claim more than the law permits, as in such case he is entitled to hold to the limit which the law authorizes within the limits he has laid out, and the territory embraced within his boundaries in excess of such limits is to be rejected...
Σελίδα 53 - State articles or work inferior to those required by contract. Payment for work done will be made only on the complete and satisfactory delivery and inspection of each lot ordered, and after proper examination and...