Status The bidirectional auger was tested underground at the Peabody Coal Co. 's Marissa Mine in Illinois from August 24, 1981, to June 11, 1982. During this tri- al period many breakdowns occurred and considerable redesign and rebuild were necessary. The machine drilled 304 holes and mined 1,520 st of coal with shift production ranging from 5 to 120 st per shift. Some success was obtained in ...
Get Price2009-09-01 · It is pointed out that the auger mining machine had great advantage in strip mine slop coal and underground thin coal seam and extremely thin coal seam [1-5]. The hydraulic system, the drill stem, the aiguille and the transmission part were studied by scholars at home. Theoretical basis was provided for the designing of the auger mining machine [6- 10] . However, the cutting theory of aiguille ...
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Get PricePeabody Coal Company's Dugger strip mine and Bethlehem's Mine No. 108 were awarded Sentinels of Safety trophies in 1978, for being the safest surface and underground coal mines in the country that ...
Get Price§ 819.21 - Auger mining: Protection of underground mining. § 819.1 - Scope. This part sets environmental protection performance standards for surface coal mining and reclamation operations involving auger mining. § 819.11 - Auger mining: General. (a) Auger mining operations shall be conducted in accordance with the requirements of part 816 of this chapter, except as provided in this .
Get Pricetonne of coal mined. History of underground auger development A summary of the development of underground auger technology, as far as has been able to be determined from available records, is outlined below, Follington et al.1. Compton Augers (Compton), a US company based in West ia, did their first underground auger test in 1949/1950.
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Get PriceAuger mining, method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest-cost techniques of mining, it is limited to horizontal or slightly pitched seams that have been exposed by geologic erosion.Augering is usually associated with contour strip-mining, recovering coal for a limited depth beyond the point where stripping ...
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