 | Geology, Economic - 1909 - 504 pages
...and about equally prominent in each of the other coal-bearing formations. In some places the effects on the adjacent rocks can be seen several feet from the actual seat of burning; in others, rocks a very short distance away are not affected. A quarter of a mile southeast... | |
 | Geological Survey (U.S.) - Geology - 1909 - 504 pages
...nix .ut equally prominent in each of the other coal-bearing formations. In some places the effects on the adjacent rocks can be seen several feet from the actual seat of burning; in others, rocks a very short distance away are not affected. A quarter of a mile southeast... | |
 | United States - 1909 - 520 pages
...and about equally prominent in each of the other coal-bearing formations. In some places the effects on the adjacent rocks can be seen several feet from the actual seat of burning; in others, rocks a very short distance away are not affected. A quarter of a mile southeast... | |
 | Coal - 1910 - 216 pages
...M I E ss C* 0O 136 CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1908, PART II. Samples of coal from the Rock Springs coalfield, Wyoming. BURNING OF OUTCROP. In...differences Laboratory No. Name of mine. Sampling point. 1 { Condition of sample. 1 Sampler. 6772 Wyoming Coal and Coke Co. Gunn-Quealy Second entry south.... | |
 | Geological Survey (U.S.) - Geology - 1910 - 622 pages
...JO 2 2 00 2 O * i •+•i+• i 2 Sf i i § § Samples of coal from lite Rock Springs coal field, Wyoming. BURNING OF OUTCROP. In the western coal fields...bed does not seem to be altered by the burning. On thc other hand, the chemical analyses usually show decided differences laboratory No. Name of mine.... | |
| |
Wyoming. BURNING OF OUTCROP. In the western coal fields many coal beds have been burned along their outcrop, and in a few places the burning is going on at the present time. The extent of the burning is in general inversely proportional to the value of... 