Coal mining in Illinois . by revolutions per minute. 2Maximum amount of carbon monoxide which can be breathed for short and infrequentintervals without injurious effects. The first gasoline locomotive used in Illinois mines wasbuilt by the Sangamon Coal Company and put in its mine atSpringfield in 1904. This crude machine, fig. 56, pulled in atrip seven to nine pit cars each weighing loaded 4,000 rails in the mine at that time weighed 16 pounds per Illinois gasoline locomotives in mines average ton-miles per gallon of gasoline and about 700 ton-miles per gal- 180 COAL M
Coal mining in Illinois . by revolutions per minute. 2Maximum amount of carbon monoxide which can be breathed for short and infrequentintervals without injurious effects. The first gasoline locomotive used in Illinois mines wasbuilt by the Sangamon Coal Company and put in its mine atSpringfield in 1904. This crude machine, fig. 56, pulled in atrip seven to nine pit cars each weighing loaded 4,000 rails in the mine at that time weighed 16 pounds per Illinois gasoline locomotives in mines average ton-miles per gallon of gasoline and about 700 ton-miles per gal- 180 COAL MINING INVESTIGATIONS Ion of engine oil. Their average travel per shift is about 20miles. Rope haulage is still used in a few mines and with limitedoutputs furnishes economical transportation of coal. In twomines hauling with main-and-tail rope cost of haulage fromparting to bottom averages 2% cents per ton. Gathering is usually done with mules. Standard 5 or 6-ton electric locomotives are used for gathering in a few mines. Fig. 56. First gasoline mine-locomotive in Illinois. Frank R. Fisher.) (Photo loaned by Mr. and storage-battery locomotives in one. The storage-batterylocomotives for gathering in mines without any steep gradesare reported to be successful and cheap to operate. Mules are kept in good condition in Illinois mines. Theiruseful life is decreasing because the increased production ofthe mines and the substitution of locomotives for mules on thelong hauls have limited the work of the animals to gathering, HAULAGE 181 and as this must be done at high speed to keep the locomotivessupplied with loads the life of a mule has consequently beenshortened. In many mines in this district and throughoutthe State the limit of the average mules work underground is3 years. The expense per mule including feed, shoeing andharness repair is estimated to be 75 cents to one dollar a on ton-mileage of mules are seldom available. Inone mine on a 2 per cent grade in favor of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcoalmin, bookyear1915
