The Mining Engineer, Volume 12Institution of Mining Engineers., 1897 |
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Common terms and phrases
acid Africa after-damp beds boilers cage Camerton carbon monoxide Carboniferous cent charges coal coal-dust coal-field Coal-measures coal-mining coal-seam coke Colliery Explosions considerable cost Council course cylinder deposits depth Derbyshire detonators district dust electricity experiments Fahr Federated Institution feet fire-damp Fireclay folds foot-pounds formation fuze Geological gold gold-fields grammes gypsum Haldane haulage Hebburn horse-power ignition inches in diameter Inst Institute of Mining iron ironstone Karoo limestone machine marl Mechanical Engineers metres Midland millimetres miners Mining and Mechanical Mining Engineers motor Newcastle-upon-Tyne North Nottinghamshire obtained occurred ounces oxygen paper pipes plant Plate practical pressure produced Prof pump pumping-engine quantity reef Report rocks roof rope safety-lamps sandstone seam shaft shale South South Africa South Wales steam Stoke-upon-Trent strata stroke surface synclinal temperature thick Timsbury tons Trans Transactions tubs underground ventilation winding-engine workmen writer
Popular passages
Page 207 - President, in the Chair. The Minutes of the last General Meeting were read and confirmed. The following Annual Report of the Council was then read : — ANNUAL REPORT OF THE COUNCIL.
Page 129 - ... (2.) A safety lamp shall not be used in any mine or part of a mine by any person employed therein unless it is provided by the owner of the mine, and no portion of any safety lamp shall be removed by any person from the mine while the lamp is in ordinary use. (3.) In Rule 12 of the general rules contained in section forty -nine of the principal Act, for the words " nor shall coal or coal dust be used for tamping...
Page 167 - PRESIDENT, IN THE CHAIR. The SECRETARY read the minutes of the last General Meeting, and reported the proceedings of the Council at their meetings on September 26th, and that day.
Page 456 - ... time its adoption should be compulsory ; but it is much to be regretted that up to the present time nothing has been done. The slight and temporary inconvenience of having to learn the system is of no moment compared to the great assistance...
Page 84 - Mr. DALZELL. One word about this letter. Do these dots here represent matter that was taken out of the letter? This is not the whole letter, is it ? Mr. WHITMAN. No, sir ; we have not a copy of the letter. Mr.
Page 222 - Engineer, according to the usual routine of pupilage, and have had subsequent employment for at least five years in responsible situations.
Page 644 - ... amount of gold present in the water, since it was found that known quantities of gold chloride solution added to distilled and sea-waters and then estimated by precipitation, scorification and cupellation nearly always showed a loss, and sometimes a very considerable one. All the above evidence is in favour of gold being present in seawater off the New South Wales coast in the proportion of about •5 to 1 grain per ton, or in round numbers from 130 to 260 tons of gold per cubic mile. This of...
Page 567 - The bottomer, at a mid-working in a vertical shaft, not provided with an appliance which constantly fences the shaft, being a mid-working in use for the regular passage of workers, or the drawing of minerals from the mine, shall not open the gate fencing the shaft until the cage is stopped at such mid-working...
Page 605 - The amount of water contributed to the water-bearing strata of the Lower Cretaceous formation every wet season by such rivers as the Darling is so great, and consequently the amount of leakage into the sea is so great, that the quantity abstracted by the artesian wells, large as it is, and even if it were ten times greater, is insignificant by comparison. Finally, as the leakage into the sea is so vast, and is entirely beyond human control, the draught on our underground supply made by artesian wells...
Page 379 - ... advanced upon his records and investigations may be shortly stated as follows : A colliery explosion in which coal-dust is the principal agent comprises numerous local explosions separate in time and in space, at irregular intervals, where the available supplies of atmospheric oxygen are greatly increased and caused by the explosive combustion of hydrogen derived from the coal-dust in the antecedent spaces by a series of chemical actions of constant sequence, which produce heat for regeneration...