The National Geographic Magazine, Volume 100National Geographic Society, 1951 - Geography Indexes kept up to date with supplements. |
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Page 290
... lignite and sparkling patches of snowy selenite mingle in brilliant patterns . Among the hills are spaces covered with sagebrush . Twisted evergreens , showy cacti , fragrant evening primroses , and clumps of willow grow along stream ...
... lignite and sparkling patches of snowy selenite mingle in brilliant patterns . Among the hills are spaces covered with sagebrush . Twisted evergreens , showy cacti , fragrant evening primroses , and clumps of willow grow along stream ...
Page 299
... lignite and bind- ing it into small briquettes with substances extracted from the raw product . For each ton of briquettes about 2.8 tons of lignite are used . The briquettes burn like charcoal , with intense blue flames . From a large ...
... lignite and bind- ing it into small briquettes with substances extracted from the raw product . For each ton of briquettes about 2.8 tons of lignite are used . The briquettes burn like charcoal , with intense blue flames . From a large ...
Page 304
... lignite research laboratory of the U. S. Bureau of Mines is finding hitherto unsuspected uses for the State's tremendous supply of 600 bil- lion tons of lignite coal . Alex C. Burr is in charge of the laboratory and the pilot plant ...
... lignite research laboratory of the U. S. Bureau of Mines is finding hitherto unsuspected uses for the State's tremendous supply of 600 bil- lion tons of lignite coal . Alex C. Burr is in charge of the laboratory and the pilot plant ...
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