1863A copper paint factory was located at Rocky Neck.Economy and Industry, Local Businesses, Maritime & Fishing Industry

MV Schooner America with the Copper Paint Factory in the background, n.d. Cape Ann Museum Library & Archives, Photo 19370
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Copper paint had been invented earlier in France, but a Gloucester firm greatly improved it by the use of yellow ochre, the bog iron ore pigment obtained from the swamps of Cape Ann. The paint was used to give the bottoms of sailing vessels a coating that protected them against the accumulation of barnacles and other marine growths.

Copeland, Melvin T., and Elliott C. Rogers. The Saga of Cape Ann. Bond Wheelwright Co., 1960.
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