Public domain
Byproducts of olive oil. In this plant, "soap" oil is extracted from the cake, leaving the pomace which has some value as a fertilizer. About five percent of the total oil content of olives is "soap" oil. Strathmore, California
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Credit lineByproducts of olive oil. In this plant, "soap" oil is extracted from the cake, leaving the pomace which has some value as a fertilizer. About five percent of the total oil content of olives is "soap" . 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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