 | Ohio. General Assembly. Senate - 1872 - 924 σελίδες
...used for examining coal mines, or which may be used in working any mine, shall be the property of tho owner of the mine, and shall be under the charge of...directing the ventilation of the mine shall be so hung and so adjusted that they will shut of their own accord, and can not stand open ; and in all such mines... | |
 | Ohio - 1872 - 368 σελίδες
...upon a loaded cage or car in any shaft or slope. the ventilation of the mine, shall be so bung and so adjusted, that they will shut of their own accord...cannot stand open; and in all such mines, the mining boas shall keep a careful watch over the ventilating apparatus, and the airways, and he shall measure... | |
 | Ohio - 1874 - 262 σελίδες
...All the safety-lamps used for examining coal mines, or which may be used in working any mine. sh*ll be the property of the owner of the mine, and shall...; and in all such mines the mining boss shall keep H. careful watch over the ventilating apparatus, and the air-ways, ami he shall measure the ventilation... | |
 | 1875 - 762 σελίδες
...shall be the property of the owner of the mine, and shall be under the charge of the agent thereof ; and in all mines generating explosive gas, the doors...directing the ventilation of the mine shall be so hun^ and adjusted that they will shut of their own accord, and can not stand open ; and in all such... | |
 | Pennsylvania. Laws, statutes, etc - 1877 - 650 σελίδες
...and shall be in the charge of the agent of such mine ; and in all mines generating explosive gases, the doors used in assisting or directing the ventilation...mine shall be so hung and adjusted that they will close themselves, or be supplied with springs or pulleys so they cannot be left standing open ; and... | |
 | Ohio - 1879 - 1232 σελίδες
...shall be the property of the owner of the mine, and shall be under the charge of the agent thereof; nz9 u_ AIi 07 sbQB #QHB˗ ҸI` | Mining boss to ex- A, , , -,, , e ., . jj 'ij • aminc and report that they will shut of their own... | |
 | Pennsylvania. Laws, statutes, etc - 1881 - 724 σελίδες
...generatinc explo- DOOM for T«n«ia<iye gases, the doors used in assisting or directing the Uonventilation of the mine, shall be so hung and adjusted that they will close themselves, or be supplied with springs or pulleys so that they can not be left standing open... | |
 | Iowa. General Assembly - 1882 - 700 σελίδες
...shall be under the charge of the agent thereof, and in all mines whether they generate fire-damp or not the doors used in assisting or directing the ventilation...shut of their own accord and cannot stand open, and the mining boss shall keep a careful watch over the ventilating apparatus and the air-ways, and he... | |
 | 1882 - 424 σελίδες
...be under the charge of the agent thereof, and in all mines, whether they generate fire-damp or not, the doors used in assisting or directing the ventilation of the mine, shall be BO hung and adjusted that they will shut of their own accord and cannot stand open, and the mining... | |
 | Colorado - 1883 - 370 σελίδες
...face of the workings the day of the month; and in all mines whether they generate fire-damp or not, the doors used in assisting or directing the ventilation...shall be so hung and adjusted that they will shut up of their own accord and cannot stand open ; and the owner or agent shall employ a practical inside... | |
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... charge of the agent of such mine, and in all mines the doors used in assisting or directing the ventilation of the mine shall be so hung and adjusted that they will close themselves or be supplied with springs or pulleys so that they... 
