Beautifully engraved certificate from the Bunker Hill Company issued
in 1960. This historic document was printed by the Schwabacher-Frey Company and has an
ornate border around it. This item has the printed signatures of the Company's President and Secretary and is
over 44 years old.
The Bunker Hill Company was founded following the discovery of the Bunker Hill Mine in 1885; it was incorporated in 1887. It grew from a strictly mining enterprise to a large industrial complex capable of carrying out every step in the production process from removing ore from the ground to fabricating finished metal products. The company was an important supplier of the nation's requirements for lead, zinc, silver, and cadmium. The lead smelter had the capacity to produce 135,000 tons of refined lead per year, or 17% of the U.S. capacity, while the electrolytic zinc plant produced 104,000 tons, or 14% of the U.S. capacity. The company also produced over 9 million troy ounces of silver, over one million pounds of refined cadmium, and a variety of by-products including 1000 ounces of refined gold. In 1968 Bunker Hill merged with Gulf Resources.
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