- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Explosive that requires a powerful initial impulse and therefore may be handled safely under ordinary conditions.
Industry:Mining
Explosive to which 15% to 20% of nitroethylene glycol has been added. This acts as a freezing-point depressant and prevents freezing at ordinary temperatures. Polar or Arctic explosives are nitroglycerin explosives of this type.
Industry:Mining
Explosive usually characterized by a low nitroglycerin content, up to 10% , and a high ammonium nitrate content of 80% to 85%, with carbonaceous material forming the remainder of the composition. This composition produces a powdery consistency and, consequently, nitroglycerin powders have relatively poor water-resistance properties, so that they should be used only in dry conditions. Their storage properties are fairly good, 2124 but this is largely dependent on the protection given after manufacture, for example, in the methods of cartridging and packing. The main application of these explosives is in quarrying and mining where the ground to be blasted is relatively soft.
Industry:Mining
Explosive with a potassium chlorate base, such as the French cheddite, which contains about 80% potassium chlorate and 5% castor oil, with dinitrotoluene constituting nearly all the remainder. Chlorate explosives are characterized by a hot flame on detonation.
Industry:Mining
Explosives containing a small portion of nitroglycerin and a base similar to blasting powder. Intermediate between blasting powder and dynamite in action. See: low-grade
Industry:Mining
Explosives designed, produced, and used for commercial or industrial applications rather than for military purposes.
Industry:Mining
Explosives in which a portion of the nitroglycerin is replaced with ammonium nitrate. The explosive velocity is reduced, but the substantial resistance to water is retained. Less expensive than gelatin dynamites.
Industry:Mining
