Henfrey, Benjamin. A plan with proposals, for forming a company to work mines in the United States, : and to smelt and refine the ores, whether of copper, lead, tin, silver, or gold. / By Benjamin Henfrey. The original can be seen at the Philadelphia Library, no. 91025. Is it not the interest of every citizen of America to promote the working of mines; since all that is obtained from the bowels of the earth becomes an addition to the public stock?

Henfrey, Benjamin.

A plan with proposals, for forming a company to work mines in the United States, : and to smelt and refine the ores, whether of copper, lead, tin, silver, or gold. / By Benjamin Henfrey. The original can be seen at the Philadelphia Library, no. 91025. Is it not the interest of every citizen of America to promote the working of mines; since all that is obtained from the bowels of the earth becomes an addition to the public stock?

Philadelphia: : Printed by Snowden & M'Corkle, no. 47 North Fourth Street., 1797 [i.e. ca. 1845]

A reprint of the 1797 original, ca. 1845.

Gap Mining Company.

Copper mines and mining -- Pennsylvania -- Lancaster County.

Mines and mineral resources -- Pennsylvania -- Lancaster County.

Mineral industries -- United States.

Industries -- Pennsylvania -- Lancaster County.

Imprint PA. Philadelphia. 1845.

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