Building

Bole hearth

A bole was a wind-blown lead-smelting hearth: a rectangular or circular stone structure open on one side, sited on an exposed ridge or summit, usually facing south-west to catch the prevailing wind. Large logs formed the base, with smaller wood interleaved with lead ore above; molten lead ran through channels into casting pits. Boles were used from at least the 12th century until the late 16th, when enclosed hearths blown by bellows replaced them.

Caveats (confidence: high)

Few boles survive as more than scorched ground and slag; operating details are partly inferred.

Sources: historicengland.org.uk

Built from

Bole hearthfrom any stone (rough stone, limestone)

Made here

Bole-smelt leadgives Lead, Slag; from Lead ore, any wood (oak timber, ash timber, elm timber and 10 more); at bole hearth; by smelter
Bole-smelt lead from dressed oregives Lead, Slag; from Dressed lead ore, any wood (oak timber, ash timber, elm timber and 10 more); at bole hearth; by smelter
Smelt tin in a peat hearthgives Tin, Slag; from Black tin, any fuel (poles, ash poles, firewood and 5 more); at bole hearth; by smelter
Smelt litharge back to lead at the bolegives Desilvered lead; from Litharge, Charcoal; at bole hearth; by smelter

Caveats (confidence: high)

Built from

Made here

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