Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . THE MUDCAP IN POSITION. THE EFFECT OF THE BLAST BREAKING UP BOULDERS MUDCAPPING When blasting boulders by mudcapping them (also called doby shooting or blistering ) the charge of dynamite is packedclosely against the surface on the top or side of the boulder, coveredwith mud and exploded. The charge should be placed on the spotwhich would be struck with a sledge if the boulder were small enoughto be broken in that way and should be packed in a so
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . THE MUDCAP IN POSITION. THE EFFECT OF THE BLAST BREAKING UP BOULDERS MUDCAPPING When blasting boulders by mudcapping them (also called doby shooting or blistering ) the charge of dynamite is packedclosely against the surface on the top or side of the boulder, coveredwith mud and exploded. The charge should be placed on the spotwhich would be struck with a sledge if the boulder were small enoughto be broken in that way and should be packed in a solid mass byslitting the paper cartridge shells, but not spreading them over the sur-face of the boulder any more than absolutely necessary. A blastingcap crimped onto fuse should be placed in the middle of the charge,and the whole covered with six inches of damp clay or sand. Thisshould be pressed firmly over the mass of dynamite, care being takennot to cover the outer end of the fuse. If the boulder is deeply im-bedded in the ground, it is best, before blasting, to dig away orloosen some of the earth surrounding it. If the boulder is cracked or seamy, the charge sho
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Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
