A rudimentary treatise on the metallurgy of silver and lead .. (1861)
Lamborn, Robert H · London, J. Weale · leaf 146
134 SMELTING IN THE SCOTCH HEARTH. REDUCTION OF ORES IN THE SCOTCH HEARTH. This system is in use in the counties of Durham,, Cumberland, and Northumberland. The furnace is constructed, as is shown in the accompanying cuts, of which fig. 53 is a vertical section, along a b, and fig. 54 a… … thrown. The shaft or cavity is 12 in. by 24 in., and 26 inches in depth, and is lined with plates of cast iron. In front of the cavity is the work-stone, c , which is inclined forward and furnished with a channel, d , that leads into the iron pot, b. Above the furnace is a hood
Silver · Lead
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