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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ... Rosette copper. Disks of copper (red from the presence of suboxide) formed by cooling the surface of molten copper through sprinkling with water. Rossie furnace. An American variety of hearth for the treatment of galena, differing from the Scotch hearth in using wood as fuel, working continuously, and having hollow walls, to heat the blast. Roughing rolls. The rolls of a train which first receive the pile, ingot, bloom, or billet, and partially form it into the final shape. Roughs, Corn. Coarse, poor sands, resulting from tin-dressing. Round coal. See Lump-coal. Rounder. See Reamer. Row, Corn. Large, rough stones. Royalty. The dues of the lessor or landlord of a mine, or of the owner of a patented invention. Rozan process. An improvement of the Pattinson process. Rubber. A gold-quartz amalgamator, in which the slime is rubbed against amalgamated copper surfaces. Rullers, Corn. The workmen who wheel ore in wheelbarrows underground. Run, Corn. 1. The natural falling or closing together of underground workings. 2. Certain accidents to the winding apparatus. 3. By the run. A method of paying coal miners per linear yard of breast excavated, instead of by the wagon of clear coal produced. 4. A long deep trough in which slimes settle. 5. See Counter. Runner. The channel through which molten metal is conducted from the blast furnace or cupola to the pig-bed, converter or moulds. See Pig-iron. Run-out fire. A forge in which east-iron is refined. Run-steel. Malleable castings. Rush, Corn. See Spire. Rusty. Applied to coals discolored by water or exposure, as well as to quartz, etc., discolored by iron oxide. Rusty gold, Pac. Free gold, which does not easily amalgamate, the particles being coated, as is supposed, with oxide of iron. Saddle. An...
  • ISBN13: 9781230255552
  • Publisher: Theclassics.Us
  • Pubilcation Year: 2013
  • Format: Paperback
  • Pages: 00032
Dimensions7.4 x 0.1 x 9.7 inches
Publication Date20130912

A Glossary of Mining and Metallurgical Terms

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