The probable explanation of this conflict arises in the resemblance of cupellation furnace bottoms to lead carbonates, and the native molybdaena of Dioscorides; and some of those referred to by Pliny may be this sort of lead ores.
The reverberatory furnace called cupola, now exclusively used in Derbyshire for the smelting of lead ores, was imported thither from Wales, about the year 1747, by a company of Quakers.
This furnace is generally employed in the counties of Northumberland, Cumberland, and Durham, for the smelting of lead ores, which were formerly carried to them without any preparation, but now they are exposed to a preliminary calcination.
Treatment oflead ores by the Scotch furnace, or ore-hearth.
In general, weathering of lead ores at the surface and secondary sulphide enrichment below are not so extensive as in the case of copper and zinc.
NOTES ON LEAD ORES=: Their Distribution and Properties.
NOTES ON LEAD ORES:# Their Distribution and Properties.
NOTES ON LEAD ORES: Their Distribution and Properties.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "lead ores" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
