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Improvement in Compounds of Bitumen, Ore, &c.

Description: Patent for a new compound called Bitumenated Ore. "The product is a dense, durable, and economical composition, suitable for both small and massive structures, and for plastering and other purposes." (Lines 66-29)
Date: November 11, 1873
Creator: Lea, Pryor
Partner: UNT Libraries Government Documents Department