 ... shake" shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means is too hazardous for men working in such places. Only permissible explosives...  Miners' Circular - Page 321942Full view - About this book
 | United States. Congress. House. Committee on Education and Labor - Coal mines and mining - 1949 - 564 pages
...battery starting when no gas or lire hazard is present and only when it is otherwise impracticable to start the battery ; similarly, the use of unconfined...permissible explosives should be used for these purposes. 11. Workmen should never go Inside a battery to start the flow of material. A charge of explosives... | |
 | United States. Congress. House. Committee on Education and Labor - 1949 - 564 pages
...and only when it is otherwise impracticable to start the battery ; similarly, the use of uneonfined "shake" shots in working places and other places in...permissible explosives should be used for these purposes. 11. Workmen should never go inside a battery to start the flow of material. A charge of explosives... | |
 | United States. Congress. Senate. Committee on Labor and Public Welfare - 1949 - 332 pages
...battery starting when no gas or fire hazard is present and only when it is otherwise impracticable to start the battery ; similarly, the use of unconfined...that is too hazardous to take down by other means. Ouly permissible explosives should be used for these purposes. 11. Workmen should never go inside a... | |
 | Administrative law - 1965 - 438 pages
...present, and if it is otherwise impracticable to start the battery; likewise, in anthracite mines open, unconfined "shake" shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means... | |
 | Administrative law - 1967 - 414 pages
...It Is otherwise Impracticable to start the battery; likewise, In anthracite mines open, unconflned "shake" shots In working places and other places In pitching veins may be flred, when no gas or fire hazard Is present, If the taking down of loose, hanging coal by other means... | |
 | United States - 1952 - 596 pages
...present, and if it is otherwise impracticable to start the battery; likewise, in anthracite mines open, unconfined 'shake' shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means... | |
 | Administrative law - 1959 - 664 pages
...present, and if it is otherwise impracticable to start the battery; likewise, in anthracite mines open, unconfined "shake" shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means... | |
 | Administrative law - 1967 - 424 pages
...if it is otherwise impracticable to start the battery; likewise, in anthracite mines open, unconnned "shake" shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means... | |
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