TransactionsAmerican Institute of Mining, Metallurgical, and Petroleum Engineers, American Institute of Mining Engineers The Institute, 1879 Some vols., 1920-1949, contain collections of papers according to subject. |
Vsebina
| 7 | |
| 12 | |
| 18 | |
| 80 | |
| 94 | |
| 101 | |
| 108 | |
| 125 | |
| 313 | |
| 344 | |
| 371 | |
| 393 | |
| 427 | |
| 451 | |
| 458 | |
| 467 | |
| 145 | |
| 163 | |
| 164 | |
| 170 | |
| 177 | |
| 193 | |
| 195 | |
| 206 | |
| 214 | |
| 220 | |
| 224 | |
| 492 | |
| 499 | |
| 505 | |
| 506 | |
| 520 | |
| 531 | |
| 542 | |
| 551 | |
| 569 | |
| 573 | |
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
actual energy Allouez Amenia amount arkose average basin bituminous blast furnace blowing-engine bottom calcareous cent charcoal claim clay coal coarse Company containing copper cost County Creek cubic yard deposits diameter discharge district drift east engine Estheria Eureka feldspar Fixed Carbon footwall formation fuel galena gold grade granite gravel gray heat Hoisted hot-blast hydraulic hydraulic mining impurities James River jigs lime limestone lode manufacture mass material Mesozoic miles Milled miner's inches mineral mines nearly nozzles obtained outcrop oven oxide Philadelphia pipe pounds pressure production Prof pyrites quantity quartz quartzite Richmond riffles River rock salt Ruby Hill sand Sandstone seam shaft shale silica slag slate sluices square miles steel strata surface T₂ temperature tenacity thick tion tons Total traces tunnel vein limestone washed welding wrought iron yield York City
Priljubljeni odlomki
Stran 385 - ... to file in the local Land Office a diagram of the same, so extended, laterally or otherwise, as to conform to the local laws, customs, and rules of miners, and to enter such tract and receive a patent therefor, granting such mine, together with the right to follow such vein or lode, with its dips, angles, and variations, to any depth, although it may enter the land adjoining, which land adjoining shall be sold subject to this condition.
Stran xxiii - To promote the arts and sciences connected with the economic production of the useful minerals and metals and the welfare of those employed in these industries by means of meetings for social intercourse, and the reading and discussion of professional papers, and to circulate by means of publications among its members the information thus obtained...
Stran 59 - The size of the opening was taken with a measure (micrometer attached) which had been compared with and adjusted to a standard United States yard. Time was read to one-fifth of a second. The level of the water (drawn from a large reservoir) was determined with Boyden's hooks, micrometer adjustment.
Stran xxv - All vacancies shall be filled by the appointment of the Council, and any person so appointed shall hold office for the...
Stran xxv - Special meetings may be called whenever the Council sees fit; and the Secretary shall call a special meeting on a requisition signed by fifteen or more members.
Stran 104 - P. 0.07, Si. 0.07, C. 0.04. Slag medium. Chemical impurities, all very low. The iron had been thoroughly worked. Tenacity as bar and as link very low. Ductility as bar and as link very high. Welds very good. Low phosphorus does not alone account for these qualities. Iron F, with P.
Stran 110 - ... per cent in low structural steels. Mn. seems to toughen steel, and to make it cast sound : its hardening effect up to Mn. 0.20 to 0.30 is slight. Copper is very low in all the irons, except M (Cu. 0.31 to 0.43), which has about the average tenacity and ductility. Cu. is next highest (Cu. 0.17) in iron A, which has rather low tenacity, but very high ductility, on account of its low carbon (C. 0.02). These experiments furnish no evidence that copper affects strength. Its effect on welding will...
Stran 229 - County. Its entire length would be about 33 miles from north to south, and 8 miles from east to west at City Point, comprising an area of about 95 square miles. 2.' Further south the formation occurs in Greenville County, west of Hicksford, and also in the adjoining county of Brunswick, east of Lawrenceville. None of these regions have yet been accurately defined. B. The Middle-Eastern Division.
Stran 124 - Phosphorus up to 0.10 per cent does not harm, and probably improves, irons containing silicon not above 0.15, and carbon not above 0.03. None of the ingredients except carbon in the proportions present seem to very notably affect welding by ordinary methods.
Stran 67 - Jtof 17,000 to 18,000 The head of the water in pounds avoirdupois, multiplied by the diameter of the pipe in inches and divided by the above coefficients, gives twice the thickness of the iron to be used. Allowance must be made for the security required ; that is, if the breakage of the pipe will cause much damage, it is advisable to lower the margin for greater safety. The diameters of the rivets used are : No.