Geological Survey Bulletin, 1526 leidimasU.S. Department of the Interior, Geological Survey; Washington, D.C., 1949 |
Knygos viduje
Rezultatai 1–5 iš 18
1 psl.
... demonstrated and inferred coal resources in 18 coal beds or zones underlie the area . Three of these units , the Van Lear coal bed and the Peach Orchard and Richardson coal zones , contain more resources and have produced more coal than ...
... demonstrated and inferred coal resources in 18 coal beds or zones underlie the area . Three of these units , the Van Lear coal bed and the Peach Orchard and Richardson coal zones , contain more resources and have produced more coal than ...
4 psl.
... resource calculations presented in this report were made in accordance with ... inferred resources than is customary . The coal beds as depicted on the ... demonstrated if they are within 0.75 mi ( 1.21 km ) of an adit , strip mine , or ...
... resource calculations presented in this report were made in accordance with ... inferred resources than is customary . The coal beds as depicted on the ... demonstrated if they are within 0.75 mi ( 1.21 km ) of an adit , strip mine , or ...
22 psl.
... demonstrated resource Mined and lost in mining TABLE 1. - Total coal resources stratigraphically by coal bed or zone ... Inferred resource remaining resource Coal bed Coal zone In beds In beds In beds 14-28 in . In beds 14-28 In beds 14 ...
... demonstrated resource Mined and lost in mining TABLE 1. - Total coal resources stratigraphically by coal bed or zone ... Inferred resource remaining resource Coal bed Coal zone In beds In beds In beds 14-28 in . In beds 14-28 In beds 14 ...
23 psl.
... demonstrated resource Remaining Mined and lost in mining demonstrated Inferred resource resource To tal remaining Quadrangle County In beds In beds In beds 14-28 In beds 14-28 In beds 14-28 In beds in . thick 28 in . thick in . > thick ...
... demonstrated resource Remaining Mined and lost in mining demonstrated Inferred resource resource To tal remaining Quadrangle County In beds In beds In beds 14-28 In beds 14-28 In beds 14-28 In beds in . thick 28 in . thick in . > thick ...
35 psl.
... resources ] Original demonstrated resource Mined and lost in mining In beds Remaining demonstrated resource Inferred resource Total remaining Quadrangle County In beds 14-28 in . thick In beds 14-28 > 28 in . thick in . thick In beds ...
... resources ] Original demonstrated resource Mined and lost in mining In beds Remaining demonstrated resource Inferred resource Total remaining Quadrangle County In beds 14-28 in . thick In beds 14-28 > 28 in . thick in . thick In beds ...
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Pagrindiniai terminai ir frazės
0.05 million short Adams quadrangle adits average bed or zone beds 14 beds 28 beds In beds Bioturbated Blaine quadrangle Breathitt Formation Brush Creek carbonaceous Clay coal bed Clay rider coal claystone Conemaugh Formation County In beds Data in inch-pound demonstrated resource Inferred demonstrated resource Mined deposits Fire Clay coal Fire Clay rider heat of combustion inch-pound units Inferred resource Total KILOMETERS 5 MILES LAWRENCE JOHNSON Lear coal bed Lee Formation less than 0.05 Limestone Little Fire Clay lost in mining Louisa quadrangle lower delta plain million short tons millions of short Mined and lost Orchard coal zone Original demonstrated resource Peach Orchard coal pyritic quadrangle fig Remaining demonstrated resource report area resource Inferred resource resource Total remaining Richardson coal zone Richardson quadrangle rider coal bed sandstone siltstone silty shale Sitka quadrangle stratigraphic sulfur thick Blaine thick In beds U.S. Bureau U.S. Geological Survey Vanport Whitesburg coal bed