Proceedings of Annual Meeting Volume 21

Proceedings of Annual Meeting Volume 21

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ... of detonation of nitroglycerin is 3005 C, or 5441 F. The quantity of energy given off by 1 kilogram is 6050.48 kilogrammeters; by one pound 19850.58 foot pounds. The per cent, by weight of products of detonation are by analysis: Carbonic acid C02 57.6 Oxygen 02 2.7 Nitrogen N2 18.8 Water H20 20.7 99.8 The specific heat of liquid nitroglycerin is 0.4248. The latent heat of frozen nitroglycerin (latent heat of fu-sion) is 33.5 calories. Thoroughly washed nitroglycerin does not lose its strength with age. On freezing, nitroglycerin expands 10/121 of its entire volume which is greater than any other liquid. Dynamite. The different types of high explosives used for blasting vary widely in their properties. Some are exceedingly quick, some relatively slow, and others are intermediate in quickness. Different types of explosives also vary in density from the heavy gelatins to some of the coal mine powders, which are very light. High explosives are graded according to their strengths compared on a weight for weight basis' with the straight nitroglycerin dynamites, which are the only type containing the actual percentages of nitroglycerin as designated. The other types make up their strengths by the use of such explosive substances as organic nitrosubstitution compounds, explosive salts and guncotton. The high explosives used for blasting in the United States are divided into three popular classes: Straight Dynamite, Ammonia or so-called "Extra" Dynamite, and Gelatin. The First Dynamite that appeared on the market was composed of 75% nitroglycerin and 25% of an infusorial earth called kieselguhr. The kieselguhr being an inactive substance, consumes some of the strength of the nitroglycerin and detracts from its sensitiveness. The more

Product details

  • Paperback | 100 pages
  • 189 x 246 x 5mm | 195g
  • United States
  • English
  • black & white illustrations
  • 123674523X
  • 9781236745231