Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . PRINCIPLE OF BLASTING PRINCIPLE OF BLASTING When dynamite explodes, that is, when the small mass of dyna-mite is changed into a very large volume of hot gases, these gases exerta strong pushing force equally in every direction because they requirea much larger space than the dynamite which produced them. Ifthe dynamite is shut up in a space just large enough to hold it, thatIS, if it is closely confined before it is exploded, the gases in escapin
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . PRINCIPLE OF BLASTING PRINCIPLE OF BLASTING When dynamite explodes, that is, when the small mass of dyna-mite is changed into a very large volume of hot gases, these gases exerta strong pushing force equally in every direction because they requirea much larger space than the dynamite which produced them. Ifthe dynamite is shut up in a space just large enough to hold it, thatIS, if it is closely confined before it is exploded, the gases in escapingto the open, force out and carry along with them the material whichshuts them in. These gases, pressing equally in every direction, will escapeprincipally where there is the least pressure to hold them in, thatis, along the lines of least resistance, and will force out the materialconfining them more in that direction than in any other. If the backpressure holding them in is about the same over the top and on allsides, then they will carry with them, or break up as they escape,a large amount of the material which shuts them in, but if one pladupontfarmershan00eidu
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Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
