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Buku Buku 1 - 10 tentang 80 di ... suitably adapted to the free passage of sound, through which conversation may....
" ... suitably adapted to the free passage of sound, through which conversation may be held between persons at the bottom and... "
Laws Passed at the Session of the General Assembly of the State of Colorado - Halaman 136
oleh Colorado - 1885
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Annual Report of the Chief Inspector of Mines for the Year Ending ...

1875
...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...of the shaft or slope ; also, the ordinary means of signalling to and from the top and bottom of the shaft or slope, and an approved safety-catch, and...
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Laws enacted in the general assembly of the commonwealth

1877
...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...ordinary means of signaling to and from the top and Als0j means0( Sig. bottom of the shaft or slopo, and an approved safety catch nu>8and sufficient...
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Acts of the state of tennessee passed by the general assembly

1881
...calculated and adapted to the free passage of sound therein, through which conversation may be held by and between persons at the bottom and at the top of the shaft or slope, and also some modern practical means for signaling from tub and to the top of the shaft from the bottom...
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Annual Report of the Chief Inspector of Mines for the Year Ending ...

1882
...agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, or telephone connection suitably adapted to the free...top and bottom of the shaft or slope ; and in the top of every shaft an approved safety-gate and an approved safety catch and sufficient cover overhead...
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Legislative Documents, Volume 5

Iowa. General Assembly - 1882
...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...or slope; also the ordinary means of signaling to ana from the top and bottom of the shaft or slope, and an approved safety-catc.h, and sufficient cover...
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Report on the Mining Methods and Appliances Used in the Anthracite ..., Volume 4

Henry Martyn Chance - 1883 - 579 halaman
...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...from the top and bottom of the shaft or slope, and an approved safety catch and sufficient cover overhead on every carriage used for lowering and hoisting...
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Biennial Report, Volume 1-2

1883
...operator, lessee or agent shall provide and maintain a metal tube from the top to the bottom of the shaft suitably adapted to the free passage of sound through...persons at the bottom and at the top of the shaft; also, the ordinary means of signaling to and from the top and bottom of the shaft and an approved safety...
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General Laws of the State of Kansas

Kansas - 1883
...be vide and maintain a metal tube from the top to the bottom talk f through. Of (.jje shaft or slOpe suitably adapted to the free passage of sound, through...conversation may be held between persons at the bottom and top of such shaft or slope, and there shall also be maintained the ordinary means of signaling to and...
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Legislative Documents, Volume 1

Iowa. General Assembly - 1884
...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...signaling to and from the top and bottom of the shaft of slope, and an approved safety catch, and sufficient cover overhead on every carriage used for lowering...
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Laws enacted in the general assembly of the commonwealth

1885
...operator, lessee or agent shall provide and maintain a metal tube from the top to tho bottom of the shaft, suitably adapted to the free passage of sound, through...held between persons at the bottom and at the top of tho shaft, also the ordinary means of signaling to and from the top and bottom of the shaft, and an...
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