Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . om the middle post is con-nected between the two middle electric fuzes in the circuit. A three-post blasting machine may be used with two wires only by connect-ing these wires to the middle and either one of the outside bindingposts—not the two outside ones. Reliable Blasting Machines, ifproperly used, will wear for many years. They must be kept out ofthe wet and mud and must not be thrown about carelessly. If it isnecessary to use them m wet wea
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . om the middle post is con-nected between the two middle electric fuzes in the circuit. A three-post blasting machine may be used with two wires only by connect-ing these wires to the middle and either one of the outside bindingposts—not the two outside ones. Reliable Blasting Machines, ifproperly used, will wear for many years. They must be kept out ofthe wet and mud and must not be thrown about carelessly. If it isnecessary to use them m wet weather or on wet work, they should becarefully wiped off before putting them away. A blasting machineshould not be put in a hot place to dry out if it has become wet, butafter being wiped off should be put away in a cool, dry place untilit has had time to dry out slowly. 23 BLASTING SUPPLIES Blasting machines should be tested occasionally with a Du PontRheostat to be sure that they are up to standard capacity. A de-scription of the Rheostat and instructions for using it will be for-warded on application. SHOWING CONNECTIONSTO 3-POST BLASTINGNE.
Size: 1484px × 1684px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
