He continued iron and copper explorations, opening the Springfield Mine for those two metals in Sykesville in 1849.
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In 1845, he established the Baltimore Chrome Works at Fells Point to refine the chromite into pigments, the primary use of the mineral at the time.
Chromite was mined at Soldiers Delight NEA until 1860 by Isaac Tyson, and some of the old mine shafts are still present.
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