A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Example of performance record of one loader in actual mine in which full cars hold 5.8 tons of coal, in coal seam averaging 6 ft high, with rooms 24 ft wide and entries 12 ft wide, under bad top requiring heavy timbering; efficiency over 3-mo period was 81.89% to 88.24%; analysis of causes of lost time. Abstract of address before Rocky Mountain Coal Min Inst, June 27 1941. (see also Coal Age v 46 n 8 Aug 1941 p 45-6)
Example of performance record of one loader in actual mine in which full cars hold 5.8 tons of coal, in coal seam averaging 6 ft high, with rooms 24 ft wide and entries 12 ft wide, under bad top requiring heavy timbering; efficiency over 3-mo period was 81.89% to 88.24%; analysis of causes of lost time. Abstract of address before Rocky Mountain Coal Min Inst, June 27 1941. (see also Coal Age v 46 n 8 Aug 1941 p 45-6)
Track loaders
Rocky Mountain Coal Min Inst -- Proc
Green, A.C. (author)
Rocky Mountain Coal Mining Institute -- Meeting ; 1941
1941
4 pages
Conference paper
English
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| Springer Verlag | 1970
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