Powder blasting

Minen-bombe, /. mine bomb, high-explosive bomb, -gas, n. mine gas. -granate,/ mine grenade, -korper, m. Mil.) shell body, -pul-ver, n. blasting powder, -werfer, m. trench mortar. 

From 775 to 865°, small amts of N02 and N20 are also formed. The residue of the decompn is Na20. For DTA TGA data see Ref 2 Uses. Na nitrate is an oxidizing agent containing more available oxygen per unit wt than K nitrate, and for this reason it is a suitable ingredient of expls such as black blasting powders (introduced by duPont) and some Dynamites (see Vol 6,... 

Norrbin, J.H. (1835—1907). A Swedish inventor, who, in collaboration with C.J. Ohlsson, introduced the first AN blasting powder, called Ammoniakkrut (see Vol 1, A306-R to A307-L)... 

Oxalate Blasting Powders. Mining safety expls invented in Eng) by Greaves and Hann in 1897— 98 and manufd by the Oxalate Blasting Powder Co at Gatebeck (Westmoreland), which later became the Nitrates Explosives Co, Ltd. These expls were a modification of BlkPdr in which sulfur was partially or entirely replaced by one or more of the following oxalic acid, oxalates of Aram, K or Na (simple or double), borax, boric acid, etc, each of which could contain w of hydration. The purpose of these substitutions was to obtain expls with a cool flame, so that they could be safely used in gaseous mines Refs 1) Daniel (1902), 592-3 2) Cond-... 

K oxalate was used as a cooling agent in mining expls such as Oxalate Blasting Powder (see in this Vol) and Gelatine-Prosperit (see in Vol 6, G52)... 

Patent Blasting Powder. Early safety mining expl, consisting of BlkPdr to which ordinary salt was added to lower the deflagration temp Ref Daniel (1902), 601... 

A -black blasting powder poudre noire au nitrate de potasse... 

Is the name given to a new blasting powder formed by the union of two ingredients—one a solid and the other a fluid, both being absolutely INEX-Pt-OSIVF, until romlnntd by the consumer. 

Potassium nitrate is used in explosives, blasting powders, gunpowder, matches, and fireworks. Other applications of this salt include pickling meats tempering steel impregnating candle wicks freezing mixtures preparing other potassium salts and as a diuretic. 

No description of British devices corresponding to US electric squibs is found in Brit books on explosives in our possession, such as Refs 36, 38 51. In Ref 38, p 59 is, however, a description of an electric device which probably serves the same purpose. It is an electric powder fuse, which consists of a thick paper tube contg a small chge of Blasting Powder (Brit for Black Powder or Gunpowder), with an ordinary low-tension fusehead fixed at one end. On passing electric current thru the fusehead it flashes and sets off the BkPdr in the tube, which can... 

Black Blasting Powder Mils Dynamite Plants... 

In 1914-1915 a new dynamite and black blasting powder plant was constructed and began operation at Bacchus, Utah... 

Janite. A large grain, black blasting powder impregnated with NG. It was used to a limited extent for excavation work on the Isthmus of Corinth in Greece Ref Daniel (1902), p 386... 

Kolf s Blasting Powder. Ger mining expl patented in 1892. A mixt of equal parts of NC, Nitrolignin Nitrostarch 50, Nitrosugar 38,... 

Composition of blasting powders with sodium nitrate... 

American blasting powder Petroclastite or Haloclastite, No. 3 black 70-74 — 11-13 15-17... 

Another method was to dip blackpowder pellets in paraffin wax. This rendered them waterproof, and also surrounded them with a cooling sheath . A blasting powder made in this form called Bobbinite was introduced in Great Britain. It will be discussed later. These half-measures brought little improvement and attention was centred on the use of ammonium nitrate explosives. 

In Germany, slow-action (non detonating) explosives of the blackpowder type (blasting powder, black blasting powder—see Table 78) were used even in dusty mines up to 1923 and typical high explosives (1910) with the composition given in Table 97, were also employed. 

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