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amount analyses appears average base basin bench Bone Branch Canyon Car sample Carbon cent character Clay Cliffs coal bed coal field coal-bearing coke Company contains County Creek determined distance district east entry exposed extends farther fault feet thick floor following section Fork formation forms Frontier fuel Geological gray head Hills horizon inches thick includes indicated known less lies lignite limestone Little locality located lower massive measured Mesaverde miles mines moisture Mountain mouth nearly obtained occur opened operations outcrop places plant plateau present probably produced prospect Railroad ranges region reported Ridge River road rocks roof sample Sand sandstone sandy Shale shown shows side slope southern strata structure Sulphur surface Survey tests thin United upper Valley vicinity western workable
Seite 294 - BULLETIN 290. Preliminary report on the operations of the fuel-testing plant of the United States Geological Survey at St. Louis, Mo., 1905, by JA Holmes.
Seite 4 - BULLETIN 9. Recent development of the producer-gas power plant in the United States, by RH Fernald.
Seite 447 - A brief consideration of these points will lead at once to the conclusion that the producer-gas plant and steam plant used in these tests compare very favorably, and that any increase in efficiency in the boiler tests that might result from using a compound engine can be offset by the introduction of...
Seite 529 - Geologic section along the New and Kanawha rivers in West Virginia, by MR Campbell and WC Mendenhall. Seventeenth Ann. Rept.. pt. 2. 1896. pp.
Seite 520 - Rept., pt. 5, 1902, pp. 265-305. An account of the coal field embracing parts of Indiana, Illinois, and Kentucky. Ditney folio, Indiana; economic geology, by GH Ashley. Geologic Atlas US, folio 84, 1902, p. 7. Recent work in the coal field of Indiana and Illinois, by ML Fuller and GH Ashley. Bull. No. 213, 1903...
Seite 448 - ... and lignites that have heretofore been regarded as practically useless. Several of the poorest grades of bituminous coals have shown remarkable efficiency in the gas producer, and lignites and peat have been used in it with great facility, thus opening the way to the introduction of cheap power into large districts that have thus far been commercially unimportant owing to lack of industrial opportunities.
Seite 521 - Alabama-Georgia-Tennessee; description, by CW Hayes. Geologic Atlas US, folio 19, 1895. The southern Appalachian coal field, by CW Hayes. Twenty-second Ann. Rept., pt. 3, 1902, pp. 227-263 An account of the stratigraphy, distribution, and character of the coals of the Jelllco, Chattanooga anil Ilirmlngham districts, embracing parts of Kentucky, Tennessee, Georgia, and Alabama IDAHO.
Seite 168 - ... sulphur or other impurities greater than 2 inches in maximum diameter and one-half inch in thickness.