File:Surface mining at Helen Bess.jpg: Revision history

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1 March 2011

  • curprev 16:3016:30, 1 March 2011‎ Dystopos talk contribs‎ 260 bytes +260‎ Surface mining at the Helen Bess Mine in 1906. (Plate 9-A) in United States Geological Survey (1910) ''Bulletin'' No. 400 ([http://libraryphoto.cr.usgs.gov/htmllib/btch351/btch351j/btch351z/bef00344.jpg link]) USGS photo by E. F. Burchard. {{PD-
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