The Encyclopedia Americana, Volume 7Grolier Incorporated, 1999 - Encyclopedias and dictionaries A thirty-volume encyclopedia covering important world events while providing major new treatments of selected topics in various academic fields. |
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Page 137
RECOVERABLE COAL RESOURCES Soviet Union ( Mapped and explored ) Percent of world total In billion metric tons 2,950 68.5 % North America 780 18.1 United States 710 16.5 Europe 280 Asia 225 Africa 35 0.8 25 0.6 10 4,305 Oceania Latin ...
RECOVERABLE COAL RESOURCES Soviet Union ( Mapped and explored ) Percent of world total In billion metric tons 2,950 68.5 % North America 780 18.1 United States 710 16.5 Europe 280 Asia 225 Africa 35 0.8 25 0.6 10 4,305 Oceania Latin ...
Page 142
The increasing refuse that accompanies mech- anization requires the processing of coal to satisfy large - scale , discriminating buyers . Cleaning plants as adjuncts to the larger mines processed two thirds of the U. S. output in 1965 .
The increasing refuse that accompanies mech- anization requires the processing of coal to satisfy large - scale , discriminating buyers . Cleaning plants as adjuncts to the larger mines processed two thirds of the U. S. output in 1965 .
Page 144
144 UNDERGROUND GASIFICATION OF COAL The United States , Britain , and the Soviet Union have made tests to gasify coal under- ground to obtain a low - Btu gas . In this ap- proach , input- and output - bore holes are drilled down to a ...
144 UNDERGROUND GASIFICATION OF COAL The United States , Britain , and the Soviet Union have made tests to gasify coal under- ground to obtain a low - Btu gas . In this ap- proach , input- and output - bore holes are drilled down to a ...
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Bibliographic information
| Title | The Encyclopedia Americana, Volume 7 The Encyclopedia Americana, Grolier Incorporated, ISBN 0717201317, 9780717201310 |
| Contributor | Grolier Incorporated |
| Publisher | Grolier Incorporated, 1999 |
| Original from | Pennsylvania State University |
| Digitized | 25 May 2011 |
| ISBN | 0717201317, 9780717201310 |
| Export Citation | BiBTeX EndNote RefMan |