Ashley Cooper / Kidney ore of haematite at Florence haematite mine near Egremont West Cumbria, England, UK, July.
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Graham Eaton / An adit in an abandoned slate mine (Cambrian age) at Tanygrisiau, Wales February 2014
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John Cancalosi / Fluorite (CaF2-calcium fluoride) and Galena (PbS - lead sulfide) and Quartz (SiO2 - silicon dioxide) - Blanchard Mine - Portales Tunnel - Socorro County - New Mexico -Fluorite (purple) is one of the m...
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Bryan and Cherry Alexander / Tour leader driving along the tunnel on the working coal mine tour of Mine 7. Spitsbergen, Norway, June 2006.
