Bulletin, Utgave 95
U.S. Government Printing Office, 1920
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acid applied Aust Bacon Barrowman blast block bottom break brick called carbon carrying cent Century charge clay coal color Compare consisting containing copper Corn crystals Dana deposit direction drill Dwight earth engine especially explosive face fault fire Forge furnace given glass gold Gresley ground Halse hard head heat hole inclined iron Kemp kind land lead lode lower machine mass material means metal mill mineral mining occurring operation oxide pass Peru piece pillar pipe plane plate Power produced pump quartz Raymond rock roof rope salt sand Scot seam separated shaft side silver soft sometimes Stand Standard steel ster stone strata stream substance surface Surv taining term thin timber tion U. S. Geol United usually variety vein wall Webster weight
Side 404 - States governing their possessory title, shall have the exclusive right of possession and enjoyment of all the surface included within the lines of their locations, and of all veins, lodes and ledges throughout their entire depth, the top or apex of which lies inside of such surface lines extended downward vertically, although such veins, lodes or ledges may so far depart from a perpendicular in their course downward as to extend outside the vertical side lines of such surface locations.
Side 356 - When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media.
Side 465 - Ike current is directly proportional to the electromotive force and inversely proportional to the resistance.
Side 294 - Gas-House Coal Tar. — Coal tar produced in gas-house retorts in the manufacture of illuminating gas from bituminous coal.
Side 329 - It follows: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, quartz; 8, topaz; 9, corundum; 10, diamond.
Side 439 - A mining claim is a parcel of land containing precious metal in its soil or rock. A location is the act of appropriating such parcel, according to certain established rules.
Side 214 - The process or processes by which the crust of the earth is deformed, producing continents and ocean basins, plateaus and mountains, flexures and folds of strata, and faults. Also, the results of these processes. (Webster) Diathermic.
Side 658 - Surface tension. That property, due to molecular forces, which exists in the surface film of all liquids and tends to bring the contained volume into a form having the least superficial area.
Side 521 - Polymeric. Having the same elements united in the same proportions by weight, but with different molecular weights. ( Webster ) Polymerize. To change into another substance having the same elements in the same proportions, but a higher molecular weight. (Webster) Polymnite.
Side 345 - Hot Drawn. — A term used to signify the product of drawing, when the operation is performed on material that is hot — usually red hot ; eg, hot-drawn seamless tubes. The term is sometimes applied to the Mannesmann product that has not been drawn.