Mineral wealth of the nation
This lump of anthracite coal was mined by the Lehigh Coal and Navigation Company of Pennsylvania, one of several coal companies that donated mineral samples to the Smithsonian in 1915. As a way of documenting the mineral wealth of the nation, companies from various industries donated samples to the museum after 1876, when the Smithsonian received a huge amount of such material from the Centennial Exhibition in Philadelphia. Before 1876, the Smithsonian collected minerals mainly for scientific research.
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