Small lead block test

H. Kast (104-07) Determination of Sensitivity to Friction (Medicion de la sensibili-dad al rozamiento) (107) Determination of Sensitivity to Initiation by Detonation (110-12) Determination of Sensitivity to Initiation by Influence (112-13) Determination of Power of Explosives using Trauzl Test (113-17), Small Lead Block Test (117), Quinan Apparatus (118), Guttmann Apparatus (118-19), Ballistic Pendulum (119-20), Mortar (Mortero probeta) (120-21) Determination of Efficiency of Initiating Devices by Lead Plate Test (121-23), Nail Test (123), Sand Test (124) and Acoustic Tests (124) Determination of Characteristics of Flames Produced on Explosion (125-29)... 

Epreuve des petits plombs (Small Lead Blocks Test). See Ref 24, p E109-L R... 

Other means of estimating and comparing the capacity of explosives for doing useful work are supplied by the tests with the ballistic pendulum,11 and by the Trauzl and small lead block tests. The first of these is useful for comparing a new commercial explosive with one which is standard the others give indications which are of interest in describing both commercial explosives and pure explosive substances. 

Another test, known as the small lead block test, is entirely a test of brisance. As the test is conducted at the U. S. Bureau of Mines,12 a lead cylinder 38 mm. in diameter and 64 mm. high is set upright upon a rigid steel support a disc of annealed steel... 

Epreuve des petits plombs ou Epreuve aux blocs de Hess (Small Lead Blocks Test or Blocks of Hess Test). This test, known in the USA as Lead Block Compression Test (LBCT) or Hess Crusher Tes (Stauchprobe nach Hess, in Ger) was invented in Austria by Hess. It is one of the Compression (or Crusher)Tests for Oetetmination of Brisance, described in Vol 3 of Encycl, pp C492 to C494. Its French modification, designed by La Commission des Substances Explosives, is listed on p C493-L, but not described. 

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