High density expls

OB can be used to predict the fumes generated by an expl. If the OB is positive, the ifumes will contain highly toxic oxides of nitrogen. For negative OB, oxides of nitrogen will be minimal but the fumes may contain a substantial amount of CO. As discussed below, relatively little CO is produced under detonation conditions by high density expls. 

Foamed Explosives for Floating Mine. An invention fcy Stark (Ref 1) provides a floating mine which consists of an expl having a closed-cell foam structure of greater and more shattering effect than die same wt of high density expl. Buoyancies of these expls are of 20 to 50 lbs per cu ft. The foamed expls consists of HE s (such as TNT, NC, PETN or RDX) bonded by a thennosetting resin Ref H,J. Stark, USP 2845025(1958) Ordo 43, 662(Jan-Feb 1959)... 

Exptl evidence showing that shock initiation in high density PETN pressings proceeds rather similarly to that in homogenous expls was obtained by the writer (Ref 74, p 219) and by Wackerle and coworkers (Refs 79 94). Fig 10, taken from Ref 74, summarizes the results of an... 

Fickett (Ref 7) used the original LJD theory in computer calculations of the deton products of condensed expls. This was done partly on the grounds of vested interest in machine codes already prepd and partly because it gave reasonably good agreement with the Monte Carlo calculations at high densities, and in the calcn of Hugoniot curves the errors in E H appeared to cancel each other to some extent... 

The smallest influence of confinement is for initiating expls and for brisant expls of high density and large diameter of chge... 

When an expl is pressed in a die by means of a ram, the friction of the walls tends to cause press and density gradients. In addition, the one-dimensional compression can result in an anisotropic structure and produce pellets with residual strains. Where dimensional stability, uniformity and high density are essential to performance, hydrostatic pressing and isostatic pressing have been used. In both of these processes, the expl is compressed by the action of a fluid, from which it is separated by a rubber (or other elastomer) film... 

Explosive Compositions, Brisont (of High Density). The following expl compns con eg solid TNT and liquid nitric esters are described. Nitroglycerin 15—20, soluble Nitrocellulose 0—7.5, Kieselguhr 0—5, stabilizer 0-2.5, TNT 85-70%. The TNT is in the form of crushed flakes Ref J. Taylor and S.H. Davidson, BritP 578371 (1946) CA 41, 1842 (1947)... 

L.F. Audrieth D-D. Sager, USP 2482089, 2482090 and 2482091(1949) CA 44, 840(1950) [Three-component expls, such as TNT, Tetryl RDX TNT, EDNA Tetryl or TNT, EDNA PETN are of high density and are more powerful than TNT. They are suitable for loading, preferably by casting of shells, bombs and mines)... 

Cook (Ref 2) states that Detqnite, a high -AN expl contg a small amt of A1 pdr as a seisinzert hss bscn used in gs3=wc l sboot= ing (especially when dropped into the dry borehole to obtain a loading density of unity) and in other blasting operations Refs 1) Naoum, NG(1928), 434-35 2)... 

They are economical and can replace "Straight Gelatins" for most uses, but ate particularly suited for outside construction work. They ate also widely used in quarrying and mining, where the high density and blasting action of such expls are advantageous (Ref 63j p40)... 

Expl compositions, brisant (of high density) 6E401... 

The distinguishing feature of slurry expls are a) high density and volumetric concn of energy (greater by a factor of l.S to 2.0 than... 

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