copper-lead bearing
31Ore — For other uses, see Ore (disambiguation). Iron ore (Banded iron formation) …
32Bulgaria — /bul gair ee euh, bool /, n. a republic in SE Europe. 8,652,745; 42,800 sq. mi. (110,850 sq. km). Cap.: Sofia. * * * Bulgaria Introduction Bulgaria Background: The Bulgars, a Central Asian Turkic tribe, merged with the local Slavic inhabitants in …
33Die casting — An engine block with aluminium and magnesium die castings. Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies… …
34History of mining in Sardinia — Mining and the processing of minerals date back to ancient times in Sardinia.Ancient traders and conquerors, attracted by the astonishing underground riches, were drawn to the island s coast. Evidence of ancient metal processing is given in the… …
35zinc — zincky, zincy, zinky, adj. zincoid, adj. /zingk/, n., v., zincked or zinced /zingkt/, zincking or zincing /zing king/. n. 1. Chem. a ductile, bluish white metallic element: used in making galvanized iron, brass, and other alloys, and as an… …
36Willow Creek mining district — Infobox Settlement name = Willow Creek mining district official name = settlement type = Alaska Mining District nickname = |pushpin pushpin label position =left pushpin map caption = pushpin mapsize = mapsize = map caption = mapsize1 = map… …
37Harz — Mountains redirects here. For the district of the same name, see Harz (district). Harz Range Country Germany …
38Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… …
39tin — tinlike, adj. /tin/, n., adj., v., tinned, tinning. n. 1. Chem. a low melting, malleable, ductile metallic element nearly approaching silver in color and luster: used in plating and in making alloys, tinfoil, and soft solders. Symbol: Sn; at. wt …
40TIN — /tin/, n. taxpayer identification number. * * * Metallic chemical element, chemical symbol Sn, atomic number 50. It is a soft, silvery white metal with a bluish tinge, employed since antiquity in the traditional form of bronze, its alloy with… …
