The Effect of Oxygen in Coal, Issues 382-388 |
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0+ash air-dried amount analyses argillite Arkansas available hydrogen beds bituminous Bonners Ferry bottle bowlders briquets calorific value car sample carbon dioxide carbon monoxide Carboniferous cent charred dust chemical cirque coal dust Coal Meas Coeur d'Alene coke Colo crest Cretaceous crushed curve d'Alene district Darr deposits east efficiency entry epoch explosion fault feet fire damp fixed carbon formation fuel gases Geological glacial erosion glaciation glacier gorge gravels Gulch head walls heavy drift high terraces hydrogen ice limit Lake Creek Lake Pend Oreille lateral moraine Lump main valley Mesaverde methane miles mines moisture Monongah Mountain Newland nitrogen older drift outcrops oxygen Paleozoic Peak portion Pottsville Prichard Purcell trench quartzite Range ratio region ridge River rock shale shows side slope steep stream sulphur surface talus terminal moraine thickness topography tributary upper vacuum valley wall volatile carbon volume weathered Yaak River
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Page 21 - Experimental work conducted in the chemical laboratory of the United States fuel-testing plant at St. Louis, Mo., January 1, 1905, to July 31, 1906, by NW Lord.
Page 53 - BULLETIN 339. The purchase of coal under government and commercial specifications on the basis of its heating value, with analyses of coal delivered under government contracts, by DT Randall. 1908. 27 pp. 5 cents. BULLETIN 343.
Page 53 - The following publications, except those to which a price is affixed, can be obtained free by applying to the Director...
Page 20 - United States Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent of Documents, Government Printing Office, Washington, DC...
Page 25 - RANSOME. FL, and CALKINS, FC, Geology and ore deposits of the Cceur d'Alene district, Idaho: Prof.
Page 111 - ... the pile. Inside briquets still firm, retaining original characteristics. D : Top briquets so badly disintegrated that they crumble to pieces on handling. Briquets in center of pile show signs of disintegration; luster of surfaces gone ; edges soft, and break easily in the hand. Fracture not so sharp as when newly made, but briquets firm, and handled without breaking. E: Entire pile disintegrated. In many cases the only briquets retaining their original shape are those protected from the weather....
Page 111 - B: Shape of briquets unchanged. Surfaces of those on top of pile have lost luster, with evidences of pitting; corners and edges worn off by erosion. All briquets firm, with fracture practically the same as that of new briquets.
Page 52 - ... fresh dust is likely to prove more inflammable and more predisposed to start and propagate a dust explosion, whatever the immediate precipitating cause may be, than the old dust which has long been exposed to the weathering action of the air. Entirely in accord with this conclusion is that to be drawn from the work of Professor Bedson, who found that while an electric current of 12.05 amperes would, by heating a resistance wire, ignite 1 gram of fine (100-mesh) fresh coal dust, it required a...
Page 37 - I believe, to concentration as the result of devolatilization and reduction of the coal by the dynamochemical process, the larger part of the concentration being the result of loss of oxygen, which is in larger proportion at the outset. The oxygen loss is disproportionally great as compared to that of the hydrogen. The liquid putrefaction products of the algae must almost certainly have entered into the groundmass of the coal and participated in the infiltration of the immersed structural vestiges...
Page 21 - BULLETIN 367. Significance of drafts in steam-boiler practice, by WT Ray and . Henry Kreisinger. 1909. 61 pp. BULLETIN 368. Washing and coking tests of coal at Denver, Colo., by AW Belden, GR Delamater, and JW Groves.