A Rudimentary Treatise on Coal and Coal Mining... |
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Page 15
... strata or beds of shale , sandstone or grit , and indurated clay , the whole being termed collectively the Coal Measures , and belonging to a still larger group of stratified rocks called the Carboniferous Formation or System ( Systême ...
... strata or beds of shale , sandstone or grit , and indurated clay , the whole being termed collectively the Coal Measures , and belonging to a still larger group of stratified rocks called the Carboniferous Formation or System ( Systême ...
Page 20
... strata in their true geo- logical sequence , along with the different classes of coal which they have been proved to contain . It is to be remembered that whilst the annexed table exhibits the natural sequence where all the strata are ...
... strata in their true geo- logical sequence , along with the different classes of coal which they have been proved to contain . It is to be remembered that whilst the annexed table exhibits the natural sequence where all the strata are ...
Page 22
... strata which occupy quite the lower part of the series . The actual beds of coal , then , from an inch or two thick , up to 8 or 10 feet ( generally con- sidered " workable " when above 18 inches or 2 feet in thickness ) , and making up ...
... strata which occupy quite the lower part of the series . The actual beds of coal , then , from an inch or two thick , up to 8 or 10 feet ( generally con- sidered " workable " when above 18 inches or 2 feet in thickness ) , and making up ...
Page 23
... strata throughout this system or group are all conformable or parallel . * The inclined position of the beds will necessarily bring them at some point or other to the surface , un- less they are overlaid by some newer formation de ...
... strata throughout this system or group are all conformable or parallel . * The inclined position of the beds will necessarily bring them at some point or other to the surface , un- less they are overlaid by some newer formation de ...
Page 24
... strata , and look at the seam itself , we shall note , first , its thickness , -an amount varying generally from 18 inches to 8 feet . In Somersetshire they contrive to work seams with only 11 inches of coal ! At Whitehaven and in the ...
... strata , and look at the seam itself , we shall note , first , its thickness , -an amount varying generally from 18 inches to 8 feet . In Somersetshire they contrive to work seams with only 11 inches of coal ! At Whitehaven and in 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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