The @USGS raised $1.1 million auctioning off historic copper plates (and donated about the same amount) cc @rsimmon <a href="https://www.usgs.gov/news/copper-plates-gone-sort">https://www.usgs.gov/news/copper-plates-gone-sort</a>

Kelsey Jordahl

@kajord

The @USGS raised $1.1 million auctioning off historic copper plates (and donated about the same amount) cc @rsimmon https://www.usgs.gov/news/copper-plates-gone-sort

5/16/2016, 7:37:55 PM

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