Public domain
This battery of ball mills grinds to an extreme fineness the feldspar, white sand and clays which are the basic ingredients of all china. This operation takes twenty-four hours. Shenango Pottery Works, Newcastle, Pennsylvania
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineThis battery of ball mills grinds to an extreme fineness the feldspar, white sand and clays which are the basic ingredients of all china. This operation takes twenty-four hours. Shenango Pottery Works. 1941-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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