. Improving crop yields by the use of dynamite . GETTING THE FARM IN SHAPE The best way to do this blasting is to drive a crowbar downinto the ground within six inches of the desired depth of the the bottom of the hole made by the crowbar, explode from one-quarter of a cartridge to one cartridge of 40 per cent, dynamite. Donot tamp, as this would cause the explosive to loosen the ground toomuch. 69

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Keywords: ., bookcentury1900, bookdecade1910, bookidimp, booksubjectexplosives