. Clearing land of stumps. Clearing of land; Explosives in agriculture. A good reel for leading wire. a perfect ditch. In stump blasting several small charges very often boulders, the purchase of an electric blasting machine and the necessary wires is justified by the advantages of the electric methods of firing. The primary reason for the superiority of electric firing over fuse firing is that several charges may be explod- ed at once; the different charges will increase the effi- ciency of Advantages each other. Thus in ditching, you can fire many charges in a row and make will take a stump
. Clearing land of stumps. Clearing of land; Explosives in agriculture. A good reel for leading wire. a perfect ditch. In stump blasting several small charges very often boulders, the purchase of an electric blasting machine and the necessary wires is justified by the advantages of the electric methods of firing. The primary reason for the superiority of electric firing over fuse firing is that several charges may be explod- ed at once; the different charges will increase the effi- ciency of Advantages each other. Thus in ditching, you can fire many charges in a row and make will take a stump out better than one large charge, and in orchard, and garden subsoiling the simultaneous blasts frequently are of advantage. Electric firing is more certain when the charges are under water. The danger from misfires due to moisture as well as from some other cause is reduced. Should misfire occur, you are safe in going to the charges as soon as the wire is disconnected from the blasting machine. With a fuse you must wait some hours to be safe. When several charges, as for instance, several boulder blasts are to be fired, you can make one trip to safety do for the lot, instead of having to travel back and forward for each shot. Finally, the intelligent and careful use of electric firing, with its possibilities of two or more small charges doing the work of one large one, and its other economies, will save considerable ex- plosives. All the makers of explosives supply electric blasting machines. The ma- chines are small boxes of wood or metal, containing a modified magneto with a handle on top that you either push down or pull up, depending on the make of machine, to operate and Electric Machine to fire the charges. The machines are made in vari- ous sizes and capacities to fire 3, 10, 30, or more charges at once. The 10 charge machine weighs about 10 pounds. Full directions for operating and caring for the machines always accompany them. For electric firing, in addition to the m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectexplosi, bookyear1917
