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300T per hour the reason why a pper mine should not

300T per hour the reason why a pper mine should not

Also 300x1 = 300 pounds of explosives in twenty - four hours for the mine we are studying . The explosives will 36.7113x300 produce = 5,006 cubic feet of gas From this you see that the prescribed quantity of air is certainly not an excess , and that if 30 % is really penetrating to the working places it will In my paper on 

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