. Standardization of mining methods; a series of important articles reprinted from Engineering and mining journal. Fig. 3. Adjustable Fuse Cutter work was formerly part of the duties of sixteen powdermen, who cut and capped fuse for their individuallevels, and who are now required to do repair work andcleaning tracks in the time formerly spent in crimpingcaps. At another mine, one man is employed in a well-ventilated fuse house underground, and cuts and capsfrom 1100 to 1400 fuses a day. Stemming or Tamping Stemming, or tamping, as it is called, is extensively used in practically all mines exc
. Standardization of mining methods; a series of important articles reprinted from Engineering and mining journal. Fig. 3. Adjustable Fuse Cutter work was formerly part of the duties of sixteen powdermen, who cut and capped fuse for their individuallevels, and who are now required to do repair work andcleaning tracks in the time formerly spent in crimpingcaps. At another mine, one man is employed in a well-ventilated fuse house underground, and cuts and capsfrom 1100 to 1400 fuses a day. Stemming or Tamping Stemming, or tamping, as it is called, is extensively used in practically all mines except metal mines. Its use has been in practice in coal and iron mines and in mines in England and on the Continent for many years. 54 STANDARDIZATION OF MINING METHODS but it is not extensively used in the metal mines inthis country. In Michigan, where many of the minersoriginally came from England, stemming is used, forthe reason that the men have been trained in thatcountry to the idea that stemming goes with thepowder, but its use has never been enforced by the. Fig. 4. Fuse Cans operators in the West; and the miner has come toknow that by filling the hole with powder and usingthe explosive instead of stemming he can satisfactorilypull the ground, and, inasmuch as the company fur- EXPLOSIVES 55 nished the powder, there is no need for him to beeconomical. It naturally became the practice for miners in thiscountry to load a hole with powder and then use anextra amount for stemming, thus establishing a customfor the use of an excessive amount. In this connection
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