A Rudimentary Treatise on Coal and Coal Mining... |
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Page 7
... depths that had been proved unattainable by aid of the water - power at the com- mand of the mines . The convenience with which the new invention could be applied caused it again often to be used as a lifter of water to the top of water ...
... depths that had been proved unattainable by aid of the water - power at the com- mand of the mines . The convenience with which the new invention could be applied caused it again often to be used as a lifter of water to the top of water ...
Page 40
... depth ; and since the thickness of these beds varies from 500 to nearly 2,000 feet , it seems probable that the floor of that sea must have been more and more , though not uniformly , depressed . In the period that succeeded that in ...
... depth ; and since the thickness of these beds varies from 500 to nearly 2,000 feet , it seems probable that the floor of that sea must have been more and more , though not uniformly , depressed . In the period that succeeded that in ...
Page 42
... depth of a few feet , sometimes to hundreds of yards— if the continuous depression of the land was maintained -until ... depths of 30 or 40 feet . It has been estimated that eight feet thick of packed woody substance would be needed to ...
... depth of a few feet , sometimes to hundreds of yards— if the continuous depression of the land was maintained -until ... depths of 30 or 40 feet . It has been estimated that eight feet thick of packed woody substance would be needed to ...
Page 46
... depth they cut the Hutton seam , having previously intersected the Maudlin or Bensham seam 20 fathoms higher . And these results appear to establish a curious point in the configuration of the coalfield . The seams which thus lie nearly ...
... depth they cut the Hutton seam , having previously intersected the Maudlin or Bensham seam 20 fathoms higher . And these results appear to establish a curious point in the configuration of the coalfield . The seams which thus lie nearly ...
Page 48
... depths of the sinkings in the newer pits , the watery strata to be pierced , and the large amount of fire - damp giving off by many of the seams . Faults or slip - dykes are few and far between as compared with most coalfields , and the ...
... depths of the sinkings in the newer pits , the watery strata to be pierced , and the large amount of fire - damp giving off by many of the seams . Faults or slip - dykes are few and far between as compared with most coalfields , and the ...
Common terms and phrases
accidents amount anthracite applied Architect ARCHITECTURE Author beds Belgium bords bottom brattice Bridge C.E. Illustrated cage carboniferous carboniferous limestone cloth boards coal-measures coalfield collieries Construction containing cylinder depth Derbyshire districts drum Edition employed engine enlarged fathoms feet of coal feet thick field fire-damp Forest of Dean fossil fuel furnace gauze geological inches diameter inclined ironstone Lancashire length levels light lignite limestone long-wall lower LUDGATE HILL measures method miles millstone grit mineral mines mode modern Newcastle North Outfall Sewer passing pillars pits placed Plates Practical pumps quantity Railway raised RALPH TATE revised roads rocks rods roof rope Rudimentary Treatise safety lamps sandstone scale Science SCOTT BURN shaft shales side South Wales square miles steam stone strata surface Tables thin Timber tion tons tubs upper valuable ventilation volume waggons wedging wheels whilst wood Woodcuts workable yards
Popular passages
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