Compression crushing

See Brisance by Lead Block Compression (Crushing) Test... 

Notq In the opinion of Dr Deffet, tests. A, B C do not suffice because they do not det the e[fi-cz erccy(rendemenc) of expls. The efficiency depends on several factors, such as brisance, pressure of expln, deton velocity, velocity of development of gaseous pressure and velocity of shock wave. As some of these props are difficult, or even impossible to det, Dr Deffet proposes to include at least one of these tests, namely brisance among control tests. The method selected by Dr Deffet is the Hast Test, in which the compression (crushing) of a copper cylinder serves as a measure of brisance and is described in detail on p449 of the above Ref... 

Kast Brisanea Meter is an apparatus for measuring the brisance by compression crushing) of a copper cylinder. It will be discussed in Vol II, under Brisance Meter of Kast... 

TTie Si-VPI-5 samples were loaded with platinum by impregnation of 1 g of sample with 8.5 mg of Pt(NH3)4Q, dissolved in a minimum quantity of water. The powders were shaped into pellets having a diameter of 0.3-0.5 mm by compressing, crushing and sieving. A 200 mg sample of the pellets was charged into a reactor tube having an internal diameter of 1 cm. 

In the single-toggle jaw crusher the jaw moves not only backwards and forwards but also up and down, so that there is attrition as well as compressive crushing action. Crushers of this type are more suitable for the reduction of hard to medium-hard material fed in smaller lumps (Fig. 6b)... 

Boots constructed with some steel materials (e.g., toes, shanks, insoles). Protect feet from compression, crushing, or puncture by falling, moving, or sharp objects. All boots must at least meet the specifications required under OSHA 29 CFR Part 1910.136 and should provide good traction. 

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