 | Indiana - 1921 - 1060 ˹éÒ
...return of said lamps to the place from whence they have received them. The operator of any mine shall provide and maintain a metal tube from the top to the bottom of the mine, suitably adapted to the free passage of sound, through which conversation may be held between... | |
 | 1870 - 500 ˹éÒ
...10. The owner or agent of every coal mine or colliery, opened and operated by shaft or slope, shall provide and maintain a metal tube from the top to the bottom of such slope or shaft, suitably calculated and adapted to the free passage of sound therein, through which... | |
 | Ohio. General Assembly. Senate - 1872 - 924 ˹éÒ
...mine operated by shaft or slope, in all cases where the human voice cannot be distinctly heard, shall provide and maintain a metal tube from the top to...held between persons at the bottom and top of the shall or slope; and there shall also be provided an approved safety-catch, and a sufficient cover over... | |
 | 1875 - 762 ˹éÒ
...and the mine while being driven for making and perfecting a second opening ; the owner or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, suitably adapted to the free passage of sound, through which conversation may be... | |
 | Andrew Roy - 1876 - 436 ˹éÒ
...safety lamp, by a competent person, before any of the workmen are allowed to enter. SEC. 10. The owner or agent of every coal mine operated by shaft or slope,...calculated for the free passage of sound therein, so that conversation may be held between persons at the bottom and top of the shaft or slope ; and there shall... | |
 | Pennsylvania. Laws, statutes, etc - 1877 - 650 ˹éÒ
...driven for making and perfecting a second opening ; the owner or agent shall pro- g rt. tubes to vide and maintain a metal tube from the top to the bottom of ueprovuiea. the slope or shaft, suitably adapted to the free passage of sound, through which conversation... | |
 | Ohio - 1879 - 1232 ˹éÒ
...of every coal mine operated by safety-apparatus. snaft> m ац cases where the human voice can not be distinctly heard, shall forthwith provide and maintain...metal tube from the top to the bottom of such shaft, suitably calculated for the free passage of sound therein, so that conversations may be held between... | |
 | 1882 - 424 ˹éÒ
...workmen are allowed to enter the mine. SEC. 299. The owner or agent of every coal mine operated by shaft, in all cases where the human voice cannot be distinctly...metal tube from the top to the bottom of such shaft suitably calculated for the free passage of sound therein, so that conversation may be held between... | |
 | 1885 - 606 ˹éÒ
...maintain a metal tube, or other suitable means for communication from the top to the bottom of said shaft or slope, suitably calculated for the free passage of sound therein, so that communication can be held between persons at the bottom and top of the shaft or slope. And there shall... | |
 | Iowa. General Assembly - 1882 - 700 ˹éÒ
...and the mine while being driven for making and perfecting a second opening; the owner or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft suitably adapted to the free passage of sound through which conversation may be... | |
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... be distinctly heard, shall forthwith provide and maintain a metal tube from the top to the bottom of such shaft... 
