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R. Meyer J. Köhler A. Homburg Explosives

R. Meyer J. Köhler A. Homburg Explosives

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197 Lead Block Test<br />

25 mm in height, with a coaxial cavity 7 mm in diameter and 20 mm<br />

long for the blasting cap), whereby the resulting density should be only<br />

slightly higher than the pour (bulk) density. Liquids are filled into thinwalled<br />

cylindrical glass ampoules or, in special cases, directly into the<br />

cavity of the lead block.<br />

The initiation is effected with an electric copper blasting cap No. 8<br />

containing 0.4 g of high pressed (380 kp/cm2 ) and 0.2 g of low<br />

pressed W PETN as the secondary charge and 0.3 g of lead azide as<br />

the initiating charge.<br />

Table 21. Lead block excavation values.<br />

A. Homogeneous <strong>Explosives</strong><br />

Explosive Test Value<br />

cm 3 /10 g<br />

Explosive Test Value<br />

cm 3 /10 g<br />

nitroglycol 610 picric acid 315<br />

methylnitrate 600 trinitroaniline 311<br />

nitroglycerine 530 TNT 300<br />

PETN 520 urea nitrate 272<br />

RDX 483 dinitrophenol 243<br />

nitromethane 458 dinitrobenzene 242<br />

ethylnitrate 422 DNT 240<br />

Tetryl 410 guanidine nitrate 240<br />

nitrocellulose ammonium<br />

13.4 % N 373 perchlorate 194<br />

ethylenediamine ammonium nitrate 178<br />

dinitrate 350<br />

B. Industrial <strong>Explosives</strong><br />

Explosive Density<br />

g/cm 3<br />

blasting gelatin 1.55 600<br />

guhr dynamite 1.35 412<br />

Gelignite<br />

65 % nitroglycerine 1.53 430<br />

ammonium-nitratebased<br />

gelatins,<br />

40 % nitroglycerine 1.47 430<br />

powder-form ammonium- 1.0 370<br />

nitrate-based explosives<br />

ANFO 0.9 316<br />

gelatinous permitted<br />

explosive 1.69 130<br />

ion-exchanged<br />

permitted explosive 1.25 85<br />

Test Value<br />

cm 3 /10 g

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