Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . his is called connecting in series. If the holes aretoo far apart for the electric fuze wires to reach between them, piecesof connecting wire will have to be cut from the spool and, after scrap-ing the insulation from the ends, used to connect the electric fuzewires in adjoining charges. Connections are all made by twisting bare wire ends securely to-gether. All wire ends should be scraped with an old knife so thatthey will he free from grease or
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . his is called connecting in series. If the holes aretoo far apart for the electric fuze wires to reach between them, piecesof connecting wire will have to be cut from the spool and, after scrap-ing the insulation from the ends, used to connect the electric fuzewires in adjoining charges. Connections are all made by twisting bare wire ends securely to-gether. All wire ends should be scraped with an old knife so thatthey will he free from grease or corrosion when connections are made. PROPER WAY TO MAKE CONNECTIONS All bare joints or other uncovered places in the wire must bekept away from water or damp ground. This can be accomplishedby putting a stick, block of wood or stone under the wire on each sideof the bare place. The Du Pont Company manufactures an instrument for testingblasting circuits, called the Du Pont Galvanometer. This is a veryingenious and useful instrument where much blastmg is done byelectricity. Complete description and instructions for using will besent on s^ DU PONT No. 6 BLASTING CAPS DU PONT BLASTING SUPPLIES Du Pont Blasting Caps are made in several different grades, butnothing weaker than the No. 6 (red label) grade can be dependedon to develop the full force of dynamite. 20 BLASTING SUPPLIES Du Pont Blasting Caps are put up 100 to the tin box and fromfive to fifty boxes are packed for shipment in a wooden case. Blast-ing caps may be exploded by shock, heat or sparks, so must behandled carefully and kept away from fire. They are weakened bymoisture and must be stored in a perfectly dry place and be kept dryuntil they are used. It is dangerous to store them or carry themwith dynamite. Fuse or Safety Fuse, as it is sometimes called, is a fine train ofpowder wrapped in jute and cotton yarn and sometimes in kinds are made, but either the Crescent or Single Tape gradesare good en
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Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
