This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...The use of this machine obviates all danger arising from the fuses not being cut square. After being cut, the lengths of fuse are drawn along the table a little further, where they are capped. Capping Of Fuses In capping, the fuse should be placed in the cap so that it barely touches the charge, and the cap not too ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...The use of this machine obviates all danger arising from the fuses not being cut square. After being cut, the lengths of fuse are drawn along the table a little further, where they are capped. Capping Of Fuses In capping, the fuse should be placed in the cap so that it barely touches the charge, and the cap not too tightly crimped on. If the fuses are to be used in damp or wet places, a further precaution should be taken by using P. & B. paint, heavy grease, or some other material which is water-tight, to keep all moisture from penetrating the cap through the junction between the cap and fuse. Whenever a sufficient quantity of fuses are capped and ready for use, they are put into special fuse cans. These may be made by taking carbide cans, cutting them down about 9 in., fitting them with special lids which are water-proof, and lining the inside with felt J in. thick. The lids should be lined as well as the cans. The fuses are coiled and placed inside these cans and transported in this manner to the shafts, from which they are transferred to the different underground fuse houses. The fuse cans should be sent back to the fuse house on surface to be refilled as the supply underground runs low. From the standpoint of efficiency, the capping of fuses by men specially employed for that purpose has proved to be a success at a number of mines. In one instance, two men do all the cutting and capping on the surface for the entire mine, averaging 3000 caps a day. This work was formerly part of the duties of sixteen powder men, who cut and capped fuse for their individual levels, and who are now required to do repair work and cleaning tracks in the time formerly spent in crimping caps. At another mine, one man is employed in a wellventilated fuse house underground, ...
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