 | Geological Survey (U.S.) - Geology - 1908 - 20 pages
...exists or is likely to recur. All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at the surface, and carefully...special precautions against fire or explosions should lie taken. G. USE OF ELECTBICITY. (1) Electricity in mining operations otî'ers so many advantages,... | |
 | Washington (State). Bureau of Labor - Coal mines and mining - 1908 - 420 pages
...exists or is likely to recur. All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at the surface, and carefully...lamp is especially dangerous because of the false feelingof security it engenders. In the filling of lamps with benzine or other low-flash oils, which... | |
 | Canada. Commission of Conservation - Agriculture - 1911 - 608 pages
...exists or is likely to recur. All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at the surface, and carefully...always be done at the surface, special precautions aganist fire or explosions should be taken. G. Use of Electricity. — (1) Electricity in mining operations... | |
 | Canada. Commission of Conservation - Agriculture - 1911 - 608 pages
...exists or is likely to recur. All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at the surface, and carefully...because of the false feeling of security it engenders. G. Use of Electricity. — (1) Electricity in mining operations offers so many advantages, and has... | |
 | James Washington Paul, Lee Clyde Ilsley, Ernest J. Gleim - Safety lamps - 1924 - 292 pages
...exists or is likely to recur. All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at the surface, and carefully...precautions against fire or explosions should be taken. Under the United States Geological Survey, so-called safety lamps used in mines in the United States... | |
 | West Virginia - 1910 - 1544 pages
...All safety lamps should be maintained in good condition, cleaned, filled, kept in a special room at surface, and carefully examined both when delivered...-benzine or other low-flash oils, which should always be dene at the surface, special precautions against flre or explosions should be taken. G. Vse of Electricty.... | |
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... Mines Containing Gas. — (1) In any mine where as much as 2 per cent. of gas can be detected by suitable method, only locked safety lamps of an approved type should be used so long as such condition exists or is likely to recur. All safety lamps... 