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If the item currently exists in our website, it is displayed below. If not, the link that you are referencing is no longer valid and no longer exists on our website. We will have some collections moved in the coming months. See what's coming in updates for Signature Collections or Digital WHILBR Collections on ContentDM.
The Potomac Refining Company advertised a refinery and ore deposits four miles north east of Harper's Ferry, W.V. on the Chesapeake and Ohio Canal. The first discovery was of manganese, "that rare and necessary mineral which is used in large quantities in arts and industry." The company also planned to process limestone, marble and iron ore.