Sand test bomb

Melamine has been used as a flash reducing agent in propints (Ref 10). It is nonhygr, of low volaty, highly resistant to hydrolysis up to 60°, and is practically neutral in aq solns (pH 7.7). Tests conducted at PicArsn indicated satisfactory impact sensitivity (40 inches with 2kg wt), and no sand crushed in the Sand Test bomb... 

MF/KC103 mixture. These tests were made in the sand test bomb with small paper cartridges in a manner similar to the miniature cartridge test described in Ref 78. The results of the tests were as follows ... 

Figure 98. U. S. Bureau of Mines Sand Test Bomb No. 1. (Courtesy U. S. Bureau of Mines.) At left, assembled for making the test. At right, disassembled showing the parts. Two covers, one with a single hole for miner s fuse, the other with two holes for the two wires of an electric detonator.

The sand test was devised in 1910 by Walter 0. Snelling, explosives chemist of the U. S. Bureau of Mines, who worked out the technique of its operation and designed the standard Bureau of Mines sand test bomb No. 1 which was used in his own investigations and in those of Storm and Cope.30 Munroe and Taylor31... 

Clark reports experiments with diazodinitrophenol, mercury fulminate, and lead azide in which various weights of the explosives were introduced into No. 8 detonator capsules, pressed under reenforcing caps at 3400 pounds per square inch, and fired in the No. 2 sand test bomb. His results, tabulated below, show that diazodinitrophenol is much more powerful than mercury fulminate and lead azide. Other experiments by Clark showed... 

A 0.4-g sample of explosive, pressed at 3000 psi into a No. 6 cap, is initiated by lead azide or mercury fulminate (or, if necessary, by lead azide and tetryl) in a sand test bomb containing 200 g of on 30 mesh Ottawa sand. The amount of azide of Tetryl that must be used to... 

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