The Cedar oil reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Cedar oil

Cedar oil was used as the base for paints by the ancient Sumerians. They would grind cobalt compoundss in a mortar and pestle to produce a blue pigment. They could obtain green from copper, yellow from lead antimoniate, black from charcoal, and white from gypsum.

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