Circular, Issues 21-23The Survey, 1938 - Geology |
Contents
GENERAL SESSION | 5 |
CURRENT DEVELOPMENTS IN COAL | 15 |
Importance of these Changes on Utilization by L C McCabe | 23 |
6 other sections not shown
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Common terms and phrases
acid amount anhydrite average barrels base exchange beds Bituminous Coal Bradford field brines burning calcium calcium carbonate carbonate cent chemical Chicago clarain Clay City coking color considerable consumption core cost County crude de-airing demand deposits dolomitic domestic drilling economic effect electrical log Engineering fact factor feet figure flooding operations formation fuel oil gasoline Geological Survey grade greensand gypsum Hardin County heating oils household stoker Illinois coal inch increase iron kaolin kaolinite Lawrence County lessee lime limestone magnetic separator manufacturers material McClosky methods mineral industries mines natural obtained oil and gas oil burner particles permeability petroleum physical plant porosity possible present pressure problem properties pyrite recovery samples sandstone saturated screen shale sideritic silica sizes smoke soil stoker coal stoker dealers stoker users stone structure sulphur surface thickness tion tons vitrain waste water intake water-flooding operations