JF Ptak Science Books
I am very aware that these titles and images are a little comical, but teh truth of the matter is that these pamphlets are chock-a-block filled with good data and DIY stuff for a wide variety of blasting needs. They don't instruct on how to make the boom-boom, because they want you to buy DuPont products--but they will help you use the explosives once you have them. Four pamphlets, all published by DuPont, all 9x6". Also they're all from the Library of Congress with minimal stamping. So: (1) Blasting Ditches with Explosives, 1936, 48pp; (2) Explosives and Blasting Caps for Seismic Prospecting, 1936, 32pp; Explosives in the Pacific Northwest, 1934, 38pp; (4) Explosives in Agriculture, 1936, 87pp. All are highly illustrated and in VG condition. $100/all
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