Annual Report for ... with Accompanying Papers, Band 19Published for the Iowa Geological Survey, 1909 |
Inhalt
| 34 | |
| 38 | |
| 44 | |
| 59 | |
| 62 | |
| 66 | |
| 69 | |
| 71 | |
| 215 | |
| 222 | |
| 226 | |
| 236 | |
| 243 | |
| 258 | |
| 264 | |
| 273 | |
| 76 | |
| 84 | |
| 87 | |
| 88 | |
| 90 | |
| 92 | |
| 93 | |
| 94 | |
| 95 | |
| 99 | |
| 102 | |
| 109 | |
| 110 | |
| 119 | |
| 124 | |
| 127 | |
| 128 | |
| 130 | |
| 131 | |
| 143 | |
| 153 | |
| 156 | |
| 166 | |
| 168 | |
| 177 | |
| 183 | |
| 192 | |
| 193 | |
| 195 | |
| 199 | |
| 200 | |
| 202 | |
| 206 | |
| 209 | |
| 213 | |
| 282 | |
| 289 | |
| 298 | |
| 311 | |
| 317 | |
| 329 | |
| 335 | |
| 344 | |
| 351 | |
| 358 | |
| 397 | |
| 423 | |
| 465 | |
| 476 | |
| 482 | |
| 488 | |
| 497 | |
| 521 | |
| 525 | |
| 590 | |
| 591 | |
| 605 | |
| 609 | |
| 621 | |
| 640 | |
| 646 | |
| 657 | |
| 693 | |
| 702 | |
| 731 | |
| 739 | |
| 745 | |
| 763 | |
| 773 | |
| 779 | |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acres Appanoose Appanoose county average basins bituminous blue bluffs bogs boiler Braddyville brown brownish black C. A. White C. R. Keyes calcareous calculated on dried Carboniferous cent Centerville Chicago Clay shale coal bed Coal Company Coal Measures creek dark depth district dried coal drift drilling Emery Rush Emery feet A. T. feet deep feet in thickness feet thick fibrous Fire clay four feet G. E. Patrick hoisting Ibid inches thick Iowa coal Iowa Geol Jasper county light-colored Louis limestone Mahaska county Marion county mile east moisture Nodaway river northeast operated Oskaloosa Ottumwa outcrops peat Polk Polk county pounds producer railroad Rept roof Rush Emery Rush sample Sandstone sandy shaft slate slope Soapstone Soapstone shale southeast southwest steam strata surface Surv thin three feet tons township upper valley vein Wapello county Whitebreast Winnebago
Beliebte Passagen
Seite 284 - Cheer district has been the chief producer and it was not until the beginning of the present century that its standing as a large mining field began to be seriously impaired.
Seite 452 - SMOKE OBSERVATIONS. 77. Percentage of smoke as observed per cent. 78. Weight of soot per hour obtained from smoke meter ounces 79. Volume of soot per hour obtained from smoke meter cubic inches METHODS OF FIRING.
Seite 424 - Loss due to unconsumed hydrogen and hydrocarbons, to heating the moisture in the air, to radiation and unaccounted for. (Some of these losses may be separately itemized if data are obtained from which they may be calculated). Totals...
Seite 491 - Moisture Per cent. Volatile matter Per cent. Fixed carbon Per cent. Ash Per cent. Sulphur Per cent.
Seite 438 - HEAT BALANCE, OR DISTRIBUTION OF THE HEATING VALUE OF THE COMBUSTIBLE. Total Heat Value of 1 Ib. of Combustible. . , .BTU BTU Per Cent. 1. Heat absorbed by the boiler = evaporation from and at 212 degrees per pound of combustible x 965.7.
Seite 457 - Code.) 72. Efficiency of the boiler ; heat absorbed by the boiler per pound of combustible divided by the heat value of 1 pound of combustible . . . .per cent. 73. Efficiency of boiler, including the grate ; heat absorbed by the boiler, per pound of dry coal, divided by the heat value of 1 pound of dry coal.
Seite 137 - Norwoodville, a coal camp, is situated two miles due south of the Delaware mine. Mining has been carried on in a desultory fashion at this point for a number of years, but it was not until recently that the present large production was attained. The company now in charge of operations has met all difficulties in a determined and scientific manner. The Norwood-White shaft No. 1, commonly known as Klondike No. 1, lies on the north side of the Chicago Great Western tracks, near the camp (Delaware Tp.,...
Seite 438 - X [(212— /) + 966+0.48 (T— 212).] 4.* Loss due to heat carried away in the dry chimney gases = weight of gas per pound of combustible X 0.24...
Seite 429 - Percentage of builders' rated horsepower developed per cent. ECONOMIC RESULTS. 68. Water apparently evaporated under actual conditions per pound of coal as fired. (Item 57 divided by Item 25) pounds 69.
Seite 693 - A marsh has a firm soil; that is, not easily shaken when walked upon, although it may be soft and very wet, even submerged, and the vegetation upon it is principally grass-like; that is, with long narrow leaves, and weak, short-lived aerial stems. Shrubs may occur on marshes, and where they are present not infrequently form thickets. * * * In marshes of this character the depth of peat may be slight or considerable.