Mining Engineers' Handbook, Volume 2Robert Peele, John Adams Church J. Wiley & sons, Incorporated, 1941 |
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Halaman 23-46
... dust in the air retards explosion , but this is not of practical importance , for , even if the explosive wave is retarded , the excess dust drops to the floor and the explosion flame , though momentarily continuing at a lower velocity ...
... dust in the air retards explosion , but this is not of practical importance , for , even if the explosive wave is retarded , the excess dust drops to the floor and the explosion flame , though momentarily continuing at a lower velocity ...
Halaman 23-47
... dust is increased ; tests at the Bruceton mine show no difference in originating an explosion in still air or in a current . Most experiments have been in practically still air . In absence of other treatment , very little dry pure dust ...
... dust is increased ; tests at the Bruceton mine show no difference in originating an explosion in still air or in a current . Most experiments have been in practically still air . In absence of other treatment , very little dry pure dust ...
Halaman 23-48
... dust present as to its explosibility in air . Samples should be taken separately of : ( a ) road dust ; ( b ) rib dust ; ( c ) roof dust ( including that on timbers ) . In absence of overhead timber , ( b ) and ( c ) may be combined ...
... dust present as to its explosibility in air . Samples should be taken separately of : ( a ) road dust ; ( b ) rib dust ; ( c ) roof dust ( including that on timbers ) . In absence of overhead timber , ( b ) and ( c ) may be combined ...
Isi
AND SORTING OF ORES | 15 |
ELECTRIC POWER | 16-1 |
sion Wiring | 19-1 |
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