Portland Cement Mortars and Their Constitutent Materials: Results of Tests Made at the Structural Materials Testing Laboratories, Forest Park, St. Louis, Mo., 1905-1907, Ausgaben 331-335U.S. Government Printing Office, 1908 - 130 Seiten |
Häufige Begriffe und Wortgruppen
Air-drying loss analysis of fuel Arkose Average 1:4 Berg Lakes Bering Glacier Bering River Bituminous coal brake horsepower breakage briquetting tests Calorific value car sample cell structure cent binder cent passed CHEMICAL ANALYSES Coal as fired coal measured Coking test Commercially available Creek cubic foot Cupola test Developed at engine Dry coal dry fuel figured Duration of test electrical horsepower hour feet figured from car Fixed carbon fuel as fired GEOLOGICAL granularmetric analysis curve Heating value Hydrogen inch to inch inches in thickness indicated horsepower hour Katalla Kushtaka Laboratory Light-gray and silvery Moisture mortar Nitrogen percentage of voids Pig iron pound of coal producer-gas test Proximate analysis Raw coal Renf sand Shale sieve sifted smoke Specific gravity square foot steaming tests Sulphur surface per hour t. u. per pound Temperature Tensile strength U. S. Geol ultimate analysis Volatile matter washed coal Washing test weight per cubic
Beliebte Passagen
Seite 182 - Percentage of rated horsepower of boiler developed Water apparently evaporated per pound of coal as fired pounds. . Water evaporated from and at 212 F.: Per pound of coal as fired do Per pound of dry coal do Per pound of combustible do Efficiency of boiler, including grate per cent.
Seite 2 - Another important factor in the United States is to be found in the nationality of the miners. Most of the men are foreign-born, a large proportion of them are unable to understand English freely, and a still larger number are unable to read or write that language. Some of them are inexperienced and do not take proper precautions either for their own safety or that of others. This becomes a most serious menace unless they are restrained by properly enforced regulations.
Seite 296 - They also indicate that this increase has been due in part to the lack of proper and enforceable mine regulations; in part to the lack of reliable information concerning the explosives used in mining, and the conditions under which they can be used safely in the presence of the gas and dust encountered in the mines ; and in part to the fact that in the development of coal mining not only is the number of miners increasing, but many areas from which coal is being taken are either deeper or farther...
Seite 10 - No. 185, which may be obtained on application to the Director of the United States Geological Survey, Washington, DC...
Seite 170 - Per pound of dry coal do. . . Per pound of combustible do. . . Efficiency of boiler, including grate per cent. Coal as fired: Test 206, Per indicated horsepower hour pounds.
Seite 159 - Furnace temperature °F. Dry coal used per square foot of grate surface per hour pounds. Equivalent water evaporated per square foot of water-heating surface per hour pounds . Percentage of rated horsepower of boiler developed Water apparently evaporated per pound of coal as fired pounds. Water evaporated from and at 212...
Seite 24 - Cell structure" refers to the general appearance as to size and not to the number of cells as given by percentage of cells by volume. In many tests the cell structure as determined from general appearance is small, when the percentage by volume indicates quite the reverse. The following abbreviations are used in the tables: fc, finely crushed, nc, not crushed.
Seite 7 - United States, or for the purpose of increasing the general efficiency or available supply of the fuel resources in the United States, the Director of the Geological Survey may have the necessary materials collected from any part of the United States where they represent extensive deposits; and it shall be the duty of the Director of the Geological Survey to have examined, without charge, the fuels required for use by the Government of the United States, and to give these examinations preference...
Seite 296 - The increase both in the number and in the 'seriousness of mine explosions in the United States during past years may be expected to continue unless, through investigations made in the United States such as have proved effective in other coal-producing countries, information can be obtained and published concerning the explosives used, the conditions under which they may be used safely in the presence of coal dust or gas, and the general conditions which make for health and safety in coal-mining...
Seite 67 - Water evaporated from and at 212° F. — Per pound of coal as fired pound Per pound of dry coal do.