Biennial Report, Volúmenes1-21883 |
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Página 15
... eight feet , and one of the best deposits of coal as yet developed in the State , is the deposit at What Cheer . There has been more coal developed in this county in the last two years than any county in the State ; and it has all been ...
... eight feet , and one of the best deposits of coal as yet developed in the State , is the deposit at What Cheer . There has been more coal developed in this county in the last two years than any county in the State ; and it has all been ...
Página 18
... eight feet in diameter , with a volume of air of fifty - five thousand feet , but the leakage allowed the current to escape , so that the mine was poorly ventilated ; the fault was with the mining boss , as the number of men employed ...
... eight feet in diameter , with a volume of air of fifty - five thousand feet , but the leakage allowed the current to escape , so that the mine was poorly ventilated ; the fault was with the mining boss , as the number of men employed ...
Página 19
... eight thousand and thirteen feet per minute . The mine was well ventilated , with the exception of the first west entry on the north side of the shaft , and they were making improvements in the way of hanging doors at the time I visited ...
... eight thousand and thirteen feet per minute . The mine was well ventilated , with the exception of the first west entry on the north side of the shaft , and they were making improvements in the way of hanging doors at the time I visited ...
Página 21
... eight feet to the man per minute ; but in going through the mine I found some of the rooms very poorly timbered ; and in two instances in a very dangerous condition , so much so that I had them timbered while I was present ; the miners ...
... eight feet to the man per minute ; but in going through the mine I found some of the rooms very poorly timbered ; and in two instances in a very dangerous condition , so much so that I had them timbered while I was present ; the miners ...
Página 22
... eight feet , and at one hundred revolu- tions the volume increased to eighty - three thousand five hundred and thirty - eight feet . The air - shaft is a circular shaft , nine feet in diam- eter ; the air is forced down this shaft and ...
... eight feet , and at one hundred revolu- tions the volume increased to eighty - three thousand five hundred and thirty - eight feet . The air - shaft is a circular shaft , nine feet in diam- eter ; the air is forced down this shaft and ...
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Términos y frases comunes
accident air-way Albia Angus appointed bituminous coal Bituminous shales black-damp Blue sand shales Boone county Boonesboro cage carbonic acid cause charge Coal and Mining Coal Company coal measures coal mines comply condition Coroner court creek cubic feet Dark death district dollars Drift deposit duties engine entry escape shaft examination feet per minute five furnace furnish Governor Gray clay shales hoisting shaft hole hundred feet Impure inches inspection inspector of mines jurors Kalo Keokuk county Kirkville labor Light limestone located Lucas county machinery Mahaska county map or plan MCELHANY miles miners mining boss Mining Company mining law Moines river oaths do say opening Oskaloosa Ottumwa owner or agent persons employed Polk county pressure proper railroad rock roof safety safety-lamp sandstone shaft or slope side superintendent therein thereof thickness thousand tion underground ventilation volume of air Wapello county William