Rudolf Clemen, in his 1927 book "Byproducts in the Packing Industry"
discusses the uses of cattle bone, horn, etc. on pp. 301-301. Another useful
source is Frank Burnham's "Rendering: The Invisible Industry" (1978: Pacific
Coast Renderers Association). Although there's not much detail on bone
processing into consumer end-products, F.W. Wilder's 1905 book, "The Modern
Packing House" (Chicago: Nickerson and Collins Co.) has some illustrations
of bone splitting machines.

-DSR.
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David S. Rotenstein, Ph.D.
Consulting Historian
Silver Spring, MD 20901
e-mail: [log in to unmask]
Web: http://www.dsrotenstein.com
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