An Elementary Course of Instruction for Mine Foremen and Pit Bosses

Εξώφυλλο
Western correspondence school of mining engineering, 1900 - 124 σελίδες
 

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Άλλες εκδόσεις - Προβολή όλων

Συχνά εμφανιζόμενοι όροι και φράσεις

Δημοφιλή αποσπάσματα

Σελίδα 41 - The owner or agent of every coal mine shall make or cause to be made an accurate map or plan of the workings of such coal mine, on a scale of one hundred feet to the inch.
Σελίδα 8 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Σελίδα 44 - ... measures and accounts at the same time and that such person shall make no unnecessary interference with the use of such scales, machinery or apparatus.
Σελίδα 47 - All controlled substances in schedule I that are possessed, transferred, sold, or offered for sale in violation of the provisions of this title shall be deemed contraband and seized and summarily forfeited to the United States.
Σελίδα 45 - Any miner, workman or other person who shall knowingly injure or interfere with any air-course or brattice, or obstruct, or throw open doors, or disturb any part of the machinery, or disobey any order given in carrying out the provisions of this act, or ride upon a loaded car or wagon in a shaft...
Σελίδα 42 - The owner or agent of every coal mine, whether it be operated by 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...
Σελίδα 7 - Subtract the numerator of the subtrahend from the numerator of the minuend, and place the difference over the common denominator.
Σελίδα 41 - ... cause to be made, an accurate map or plan of the working of such mine on a scale of not less than one hundred feet to the inch, showing the area mined or excavated. Said map or plan shall be kept at the office of such mine. The...
Σελίδα 45 - Any inspector guilty of fraud, deceit, or culpable negligence in the performance of his duties shall be punished by fine not exceeding one hundred dollars, or imprisonment in the county jail or house of correction not exceeding one month, or by both, in the discretion of the court.
Σελίδα 42 - ... underground traveling way from the top of the escape shaft, so as to furnish the proper protection from fire, for a distance of one hundred feet from the hoisting shaft; and in that event the owner...

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