Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 319
ets attached to the apron, and are .carried over the top, while thetailings are drawn away from the front by an exhaust blower. … 1252. ORE ROASTINGFURNACE, revolving type.The large cylinder takescharge by the manholes, andrevolves on power-driven rol-lers. The furnace is on atruck to be removed whenrequired. The heated gases pass through the revolving cylinder and to a chimney. MINING. 309
Mechanical movements
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