см. shaft furnace
21spectacle furnace — noun : a German shaft furnace with two tapholes …
22stetefeldt furnace — ˈsted.əˌfelt noun Usage: usually capitalized S Etymology: after Charles A. Stetefeldt, 20th century American mining engineer, its inventor : a shaft furnace in which silver ores are desulfurized and chloridized by dropping them pulverized and… …
23Electric arc furnace — An electric arc furnace (EAF) is a furnace that heats charged material by means of an electric arc. Arc furnaces range in size from small units of approximately one ton capacity (used in foundries for producing cast iron products) up to about 400 …
24Franklin Furnace — is a famous mineral location for rare zinc, iron, manganese minerals in old mines in Franklin, New Jersey, USA. This locale produced more species of minerals (over 300) and more different fluorescent minerals than any other location. The famous… …
25mcdougall furnace — mə̇kˈdügəl noun Usage: usually capitalized M&D Etymology: after McDougall, 19th century British engineer : a roasting furnace consisting of a vertical cylindrical shaft containing several superposed hearths over which ore entering at the top is… …
26Air furnace — Air Air ([^a]r), n. [OE. air, eir, F. air, L. a[ e]r, fr. Gr. ah r, air, mist, for a[digamma]hr, fr. root a[digamma] to blow, breathe, probably akin to E. wind. In sense 10 the French has taking a meaning fr. It. aria atmosphere, air, fr. the… …
27Tunnel shaft — Tunnel Tun nel, n. [F. tonnelle a semicircular, wagon headed vault, a tunnel net, an arbor, OF. also tonnel; dim. of tonne a tun; so named from its resemblance to a tun in shape. See {Ton}.] 1. A vessel with a broad mouth at one end, a pipe or… …
28cora humming bird — Shaft Shaft, n. [OE. shaft, schaft, AS. sceaft; akin to D. schacht, OHG. scaft, G. schaft, Dan. & Sw. skaft handle, haft, Icel. skapt, and probably to L. scapus, Gr. ????, ????, a staff. Probably originally, a shaven or smoothed rod. Cf. {Scape} …
29line — Shaft Shaft, n. [OE. shaft, schaft, AS. sceaft; akin to D. schacht, OHG. scaft, G. schaft, Dan. & Sw. skaft handle, haft, Icel. skapt, and probably to L. scapus, Gr. ????, ????, a staff. Probably originally, a shaven or smoothed rod. Cf. {Scape} …
30main line — Shaft Shaft, n. [OE. shaft, schaft, AS. sceaft; akin to D. schacht, OHG. scaft, G. schaft, Dan. & Sw. skaft handle, haft, Icel. skapt, and probably to L. scapus, Gr. ????, ????, a staff. Probably originally, a shaven or smoothed rod. Cf. {Scape} …
