Century Dictionary and Cyclopedia
- n. A trade-name for an explosive, consisting essentially of ammonium nitrate and chlordinitrobenzene, varied sometimes by the substitution or addition of other ingredients. It is claimed that this material is safer in use than many other explosives, and particularly well adapted to coal-mining and quarrying; but the deliquescent character of ammonium nitrate requires protection from contact with the air.
“roburite" contains chloro-nitro-naphthalene, and romit, a Swedish explosive, nitro-naphthalene.”
“The charge was 65 grammes of roburite, which brought down a large quantity of coal, not at all too small in size.”
“This gave no perceptible flame (70 grammes of roburite was the charge in these experiments).”
“These gentlemen had ample opportunity of seeing roburite used in the coal mines of Westphalia, and it was mainly upon their testimony that the patents for the British empire were acquired by the Roburite Explosive Company.”
“The roburite -- which resembles nothing so much as a common yellow sugar -- is packed in cartridges of about 4½ in. in length and 1½ in. in diameter, each containing about 65 grammes (one-seventh of a pound) inclosed in a waterproof envelope.”
“We recently gave a detailed account of trials carried out at the School of Military Engineering, Chatham, to test the safety and strength of roburite, as compared with gun cotton, dynamite, and blasting gelatine.”
“Mr. Walker was so impressed with the great advantages of roburite that he desired to introduce it into his own colliery, where he gladly arranged with the company to make the first coal mining experiments in this country.”
“The result was most striking, and appeared to carry conviction of the great comparative safety of roburite to all present.”
“This reduced charge gave excellent results as regards coal winning, and one of the subsequent shots, with the same weight of roburite, produced from 10 to 11 tons of coal in almost a solid mass.”
“Under the same conditions as to firedamp, a charge of roburite was placed on a block of wood inside the boiler, totally unconfined except by a thin covering of coal dust.”
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