Miners' Circular, Volumer 2-24Bureau of Mines, 1911 |
Inni boken
Resultat 1-5 av 100
Side 3
... possible . Because they can be used with greater safety , permissible explosives have taken the place of other explosives in many coal mines in the United States during the last two years , and their use is in- creasing rapidly ...
... possible . Because they can be used with greater safety , permissible explosives have taken the place of other explosives in many coal mines in the United States during the last two years , and their use is in- creasing rapidly ...
Side 24
... possible . Don't drill the holes beyond the undercutting or shearing . Don't fire two shots at once , except by electricity from outside the mine . If electric firing is not used , allow enough time between shots for the dust to settle ...
... possible . Don't drill the holes beyond the undercutting or shearing . Don't fire two shots at once , except by electricity from outside the mine . If electric firing is not used , allow enough time between shots for the dust to settle ...
Side 7
... the tests by the Bureau of Mines has anthracite dust been made to spread an explosion . It is possible COAL - DUST EXPLOSIONS . 7 Quantity of dust needed to spread an explosion Fine coal and coal dust 7 Differences in coal dust__ 7.
... the tests by the Bureau of Mines has anthracite dust been made to spread an explosion . It is possible COAL - DUST EXPLOSIONS . 7 Quantity of dust needed to spread an explosion Fine coal and coal dust 7 Differences in coal dust__ 7.
Side 8
been made to spread an explosion . It is possible that under some conditions anthracite dust may ignite when suspended in the air , but there seems to be little danger of this under ordinary mining condi- tions . Moreover , in the long ...
been made to spread an explosion . It is possible that under some conditions anthracite dust may ignite when suspended in the air , but there seems to be little danger of this under ordinary mining condi- tions . Moreover , in the long ...
Side 11
... possible a few years ago , but since then several mine explosions have been laid to these causes . Of course it must take a combination of unusual conditions to start an explosion in this way , but such a combination may happen now and ...
... possible a few years ago , but since then several mine explosions have been laid to these causes . Of course it must take a combination of unusual conditions to start an explosion in this way , but such a combination may happen now and ...
Innhold
9 | |
19 | |
23 | |
26 | |
28 | |
32 | |
38 | |
44 | |
26 | |
34 | |
49 | |
7 | |
9 | |
24 | |
26 | |
34 | |
8 | |
14 | |
3 | |
12 | |
15 | |
2 | |
5 | |
13 | |
19 | |
3 | |
21 | |
5 | |
45 | |
49 | |
50 | |
56 | |
62 | |
70 | |
73 | |
78 | |
84 | |
90 | |
96 | |
102 | |
108 | |
3 | |
29 | |
9 | |
16 | |
22 | |
28 | |
34 | |
47 | |
Vanlige uttrykk og setninger
accidents artificial respiration bandage applied battery black blasting powder bones breathing apparatus breathing bags Bureau of Mines burning carbon dioxide Carl Meissner carry cars cartridge cause cent charge Clarence Hall Class coal bed coal dust coal mines coal powder Collier powder damp dangerous Draeger Dressing for fracture drill hole dust explosion dynamite electric detonator explosives tested prior face feet FIGURE fire damp first-aid flame fuse G. A. Burrell G. S. Rice gases H. H. Clark helmet ignited inches inflammable injured killed lead wires lungs methane mine-rescue miner misfire nitroglycerin oxygen patient permissible explosives pounds precautions pressure properly quantity rate of detonation Reprint of United ribs S. P. Howell safety lamp shock shot firer shots are fired side solid splints squibs stemming stretcher tamped TECHNICAL PAPER temperature timber Titanite tourniquet triangular bandage trolley wire tube undercut valve wearer
Populære avsnitt
Side 14 - With arms held straight, swing forward slowly, so that the weight of your body is gradually brought to bear upon the patient. The shoulder should be directly over the heel of the hand at the end of the forward swing. Do not bend your elbows. This operation should take about two seconds.
Side 14 - BULLETIN 17. A primer on explosives for coal miners, by CE Munroe and Clarence Hall. 61 pp., 10 pis., 12 figs. Reprint of United States Geological Survey Bulletin 423. BULLETIN 20. The explosibility of coal dust, by GS Rice, with chapters by JCW Frazer, Axel Larsen, Frank Haas, and Carl Scholz.
Side 15 - After two seconds, swing forward again. Thus repeat deliberately twelve to fifteen times a minute the double movement of compression and release, a complete respiration in four or five seconds.
Side 66 - It is about 4£ inches long and is lined with mucous membrane, which is continuous with that of the nose and mouth. Extending from the lower part of the pharynx are the openings of the esophagus (gullet) and the larynx (voice box), the former lying behind, the latter in front. The larynx forms a part of the respiratory apparatus, but has also a more special function of being the principal organ of speech.
Side 54 - Truths. 1. It is easier, better, and cheaper to prevent than to cure disease. 2. Everything that protects the mother before her baby is born improves the health of the baby after its birth. 3. Many of the diseases observed in older children and adults begin in infancy. 4. Healthy babies make strong men and women. 5. The baby's food, home, and surroundings play an important part in keeping it well or making it sick. 6. Mother's milk is the best food for babies. 7. Cow's milk which has become infected...
Side 62 - The miner shall examine his working place before beginning work, and take down all dangerous slate, or otherwise make it safe by properly timbering it before commencing to mine or load coal.
Side 8 - Continue artificial respiration (if necessary, two hours or longer), without interruption until natural breathing is restored, or until a physician arrives.
Side 13 - Resuscitation, composed of authorized representatives of The American Medical Association, The National Electric Light Association and The American Institute of Electrical Engineers.
Side 30 - ... to have crossed the Sierra Nevada going west into California. Just after entering the mountains, Captain Walker chose George Nidever and Zenas Leonard to help him select a camping-place. They decided to take different routes. It was not long before Nidever discovered fresh signs of Indians. Alarmed not only for his own safety, but also for the safety of Walker and Leonard, he was looking around for more signs, when he happened to turn in the direction from which he had come and saw two Indians...
Side 11 - BULLETIN 44. First national mine-safety demonstration, Pittsburgh, Pa., October 30 and 31, 1911, by HM Wilson and AH Fay, with a chapter on the explosion at the experimental mine by GS Rice. 1912. 75 pp., 7 pis., 4 flgs.