Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . e used. This explosive is so much slower m action than dynamite thata series of properly gauged and properly placed charges will split a logalong the gram, just as evenly as if a number of wedges were used. This method of splitting logs is so much quicker, cheaper andeasier than any other, that those who have once become proficient at itnever give it up. Auger holes are bored along the line of the grain,about one-quarter to one-half of the way th
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . e used. This explosive is so much slower m action than dynamite thata series of properly gauged and properly placed charges will split a logalong the gram, just as evenly as if a number of wedges were used. This method of splitting logs is so much quicker, cheaper andeasier than any other, that those who have once become proficient at itnever give it up. Auger holes are bored along the line of the grain,about one-quarter to one-half of the way through the log, the depth ofthe holes and the distance between them depending on the kind ofwood, the grain, and the diameter of the log. A few ounces of FFBlasting Powder are put into the bottom of each hole, care being firsttaken to see that the hole is dry, then wooden plugs are driven firmlyinto the tops of the holes to tamp or confine the charge. In some kinds of wood it is best to leave a considerable air spacebetween the bottom of the plug and the powder. The plugs musthave a groove in the side large enough to admit the electric squib 42. SPLITTING STUMPS AND LOGS wires or the fuse. As blasting powder is exploded by a spark orflame it is not necessary to use a detonator with it. Electric squibsare similar in appearance to electric fuzes, except that they havea paper capsule instead of a copper cap. They do not explodewhen the electric current passes through them, but ignite the blastingpowder by a flash. If electric squibs and a blasting machine are usedfor exploding the charges, they can all be fired simultaneously. Thisusually is the best and cheapest way, as a little less powder is requiredthan when the charges are exploded separately with fuse. Whenusing electric squibs, it is only necessary to have the groove or channelin the sides of the wooden plugs large enough for the two small wiresto run through them, if the cap of the electric squib is put in placebefore the p
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Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
