In Northumberland, England, 18th century, a unit of mass used for lead ore, = 8 hundredweight = 896 pounds av.
In this county, lead ore is wrought by the bing, a measure containing 8 cwt. of clean ore; the workmen being paid by the owners of the mine at different prices, from 8s to 36s. per bing (for getting and washing, or cleaning) according to the richness, quality, or hardness of the mine.
The lead mines in Allendale produce about 12000 bings of lead ore annually, which, at 4l. 4s. 0d. per bing, is upwards of 50000l. a year.
J. Bailey and G. Culley
A General View of the Agriculture of Northumberland, with Observations on the Means of its Improvement…
Newcastle: printed by Sol, Hodgson, and sold in London by Robinson and Nichol, 1797.
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