The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General Literature, 6. kötetThomas Spencer Baynes C. Scribner's Sons, 1878 |
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46. oldal
... coal miners . The propor- tion of carbon in bituminous coals may vary from ... Land ........ Lignite and Brown Coal . 63.10 8.91 7.25 0.96 19.78 79.61 ... coals . fitness of the coal for use in gas - making . This excess is greatest in ...
... coal miners . The propor- tion of carbon in bituminous coals may vary from ... Land ........ Lignite and Brown Coal . 63.10 8.91 7.25 0.96 19.78 79.61 ... coals . fitness of the coal for use in gas - making . This excess is greatest in ...
47. oldal
... coals being found in such strata . By the term " ash " is understood the mineral matter re- maining unconsumed after the complete combustion of the carbonaceous portion of a coal . This represents part of the mineral matter present in ...
... coals being found in such strata . By the term " ash " is understood the mineral matter re- maining unconsumed after the complete combustion of the carbonaceous portion of a coal . This represents part of the mineral matter present in ...
48. oldal
... coal of small extent found in some coal - fields in Southern Europe . Another theory , that proposed by Dr Mohr , deserves notice , namely , that coal may be of marine origin , and derived from the carbonization of sea weeds , such as ...
... coal of small extent found in some coal - fields in Southern Europe . Another theory , that proposed by Dr Mohr , deserves notice , namely , that coal may be of marine origin , and derived from the carbonization of sea weeds , such as ...
48. oldal
... COAL WORKING DEPTH COLEBROOK CLEE HILLS Staffordo DERBY York Derby Nottingham LEICESTERSHIRE CHARNWOOD FOREST ... FIELDS of GREAT BRITAIN SHEWING THE AREAS OF EXPOSED AND CONCEALED COAL MEASURES Scale of Miles 50 Inch - 50 Miles Index ...
... COAL WORKING DEPTH COLEBROOK CLEE HILLS Staffordo DERBY York Derby Nottingham LEICESTERSHIRE CHARNWOOD FOREST ... FIELDS of GREAT BRITAIN SHEWING THE AREAS OF EXPOSED AND CONCEALED COAL MEASURES Scale of Miles 50 Inch - 50 Miles Index ...
48. oldal
... COAL MEASURES MIDDLE COAL MEASURES ROYLEY CANISTER BEDS MILLSTONE GRIT IMESTONE FIG . 1 FOREST OF DEAN COAL BASIN Length about 11 miles New Bowson Pit U PPE A U FIG . 2 SOUTH PART OF THE Length 71⁄2 miles LANCASHIRE COALFIELD Audenshaw ...
... COAL MEASURES MIDDLE COAL MEASURES ROYLEY CANISTER BEDS MILLSTONE GRIT IMESTONE FIG . 1 FOREST OF DEAN COAL BASIN Length about 11 miles New Bowson Pit U PPE A U FIG . 2 SOUTH PART OF THE Length 71⁄2 miles LANCASHIRE COALFIELD Audenshaw ...
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