 | 1885 - 606 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubic feet of air per minute for each mule or... | |
 | 1883 - 340 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubic feet of air per minute for each mule or... | |
 | 1913 - 1372 strani
...good and sufficient amount of ventilation for the employe's therein, to be in no case less than 100 cubic feet of air per minute for each person in the...where men are working, is the nondelegable duty of the mineowner. The" evidence to our minds Justifies a finding to the effect that this duty was neglected... | |
 | Iowa - 1884 - 336 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less, than one hundred cubic feet of air per minute for each person employed in such mine, and not lees than five hundred cubic feet of air per minute for each mule or... | |
 | Iowa - 1884 - 336 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubio feet of air per minute for each mule or... | |
 | Iowa, Emlin McClain - 1884 - 314 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each porson employed in such mine, and not less than five hundred cubic feet of air per minute for each... | |
 | Iowa. State Department of Health - 1885 - 602 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubic feet of air per minute for each mule or... | |
 | Iowa. Board of Health - 1885 - 606 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubic feet of air per minute for each mule or... | |
 | Sir Frederick Augustus Abel - 1889 - 452 strani
...shaft, slope, or drift, shall provide and maintain for every such mine an amount of ventilation of not less than one hundred cubic feet of air per minute for each person employed in such mine, and not less than five hundred cubic feet of air per minute for each mule or... | |
 | Sir Frederick Augustus Abel - 1889 - 452 strani
...shall provide and hereafter maintain for every such mine, ample means of ventilation, affording not less than one hundred cubic feet of air per minute for each and every person employed in such mine, and as much more as the circumstances may require, which shall... | |
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... ventilation of not less than one hundred cubic feet of air per minute for each person... 
