hammer and chisel for grist mill
The Grist Milling Process - Pennsylvania State University. The Grist Milling Process, The mill was described as "a fine grist mill which grinds both coarse and fine flour, and trade is so great that it must keep going early and late", the miller had to shut down to recut the dulled grooves in the working surfaces of the millstones with a very hard chisel-headed hammer called a millbill .
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