Biennial Report, Volúmenes1-21883 |
Dentro del libro
Resultados 1-5 de 40
Página 20
... . They have a capital of $ 300,000 . The opening is by a shaft ; the parties in charge of this shaft located it on the old theory , that if there was coal in one particular locality on some 20 [ E 4 REPORT OF STATE MINE INSPECTOR .
... . They have a capital of $ 300,000 . The opening is by a shaft ; the parties in charge of this shaft located it on the old theory , that if there was coal in one particular locality on some 20 [ E 4 REPORT OF STATE MINE INSPECTOR .
Página 26
... opening a mine the coal will dip , as they advance into the hill , and in- crease in thickness until , perhaps , a thickness of six or seven feet is reached in a distance of seventy - five yards or less , when the floor of the coal will ...
... opening a mine the coal will dip , as they advance into the hill , and in- crease in thickness until , perhaps , a thickness of six or seven feet is reached in a distance of seventy - five yards or less , when the floor of the coal will ...
Página 32
... opening . They were relying on natural ventila- tion , which at the time of my visit ( which was in warm weather ) , was no ventilation , as there was no place in the mine where the cur- rent of air would turn the anemometer . I ...
... opening . They were relying on natural ventila- tion , which at the time of my visit ( which was in warm weather ) , was no ventilation , as there was no place in the mine where the cur- rent of air would turn the anemometer . I ...
Página 33
... opening mines , preparing for the win- ter trade . They have three mines now being opened , two slopes and one drift , and are pushing the work as fast as they can . While at Swan there is a mine operated by a shaft using 5 1883. ] 33 ...
... opening mines , preparing for the win- ter trade . They have three mines now being opened , two slopes and one drift , and are pushing the work as fast as they can . While at Swan there is a mine operated by a shaft using 5 1883. ] 33 ...
Página 39
... opening out the mine will give them trouble in the future , and is no benefit to them at the present time , as they were driving double cross - entries , and could just as well turn rooms off both cross - entries as off of one ; they ...
... opening out the mine will give them trouble in the future , and is no benefit to them at the present time , as they were driving double cross - entries , and could just as well turn rooms off both cross - entries as off of one ; they ...
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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