Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . The illustration on page 35 shows two large redwood stumpswhich had practically one root below the surface, the two treeshaving stood so close to each other that they grew together inthe ground. The circumference of the stump just above the surfaceof the ground was seventy-five feet. This stump was completelyremoved, as shown on pages 37 and 39, with ninety-three poundsof Hercules Powder-Stumping L. F. Six trenches were dug underthe stump at diff
Du Pont farmer's handbook; instructions in the use of dynamite for clearing land, planting and cultivating trees, drainage, ditching and subsoiling . The illustration on page 35 shows two large redwood stumpswhich had practically one root below the surface, the two treeshaving stood so close to each other that they grew together inthe ground. The circumference of the stump just above the surfaceof the ground was seventy-five feet. This stump was completelyremoved, as shown on pages 37 and 39, with ninety-three poundsof Hercules Powder-Stumping L. F. Six trenches were dug underthe stump at different points, five of these being loaded each withtwenty-five 1 Yl x 8-inch cartridges of this explosive, and the sixthwith thirty 1 /2 x 8-inch cartridges. These charges were then con-nected up electrically and the trenches were thoroughly and com-pactly tamped above the dynamite to the surface of the six charges were then fired simultaneously with a blasting ma-chine. The illustration on page 35 shows the blasting machineused and the cartridges of Hercules Powder-Stumping L. F. on theground preparatory to charging the trenches. 38. I i 58 I. oo > > >> h £ it E BLASTING OUT STUMPS This stump had stood from twenty-five to thirty years, but wasperfectly solid. It made about thirty-five cords of wood after it wasblasted. See pages 11-16 and 31 for proper methods of priming,charging, tamping and firing. Cypress Stumps Cypress stumps are found, as a rule, in swamps where the soilis a soggy muck often covered with water. These stumps have notap root, but have large spreaders reaching out in all directionsto such an extent that they are interwoven with those of neighboringstumps, forming a tangle of roots that never rot. Strong and quickdynamite gives the best results when blasting them. The commonpractice is to place 1 /4 x 8-inch cartridges under each of the princi-pal spreaders, and fire all simultaneously by means of a blastingmachine. The cypress wood, be
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Keywords: ., bookcentury1900, bookdecade1910, bookiddup, booksubjectexplosives
