Bark mill
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Bark mills, also known as Catskill's mills, are water, steam, horse, ox or wind-powered edge mills used to process the bark, roots, and branches of various tree species into a fine powder known as tan
Overshot waterwheel at Combe House Hotel in Holford, Somerset, England.
Bark mill - 1892 illustration in Popular Science Monthly Volume 41
Bishop's Bark Mill (off York Street), Launceston (image from the Tasmanian Archive and Heritage Office - TAHO)
The Beith Bark Mill
Tanbark
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Tanbark is the bark of certain species of trees, traditionally used for tanning hides into leather.
Bark mill
…water, steam, horse, ox or wind-powered edge mills used to process the bark, roots, and branches of various tree species into a fine powder known as tanbark, used for tanning leather. This powdering allowed the tannin to be extracted more efficiently from its woody source material. A barker would strip the…
Workers peeling hemlock bark for the tannery in Prattsville, New York, United States
Removal of bark from oak branches
Another view of the process