Robert Harding

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1116-53091 - Aerial view of TexasGulf Potash Ponds which are solar evaporation ponds used in the process of mining potash. Potash, a water-soluble potassium salt is extracted and blue dye is added to increase the rate of evaporation. It is mainly used in fertilizer products but also in the making of soap, glass, ceramics and batteries. The mine is currently owned and operated by Intredpid Potash Inc and the ponds cover 400 acres of land surrounded by sandstone cliffs and wilderness near Moab, Utah, USA, Utah, United States of America
1202-610 - Atlantic cliffs pounded by surf in stormy winter weather, at Pendeen, with the ruins of old tin mines, part of the UNESCO World Heritage Site Cornwall and West Devon Mining Landscape, near St. Just, Cornwall, England, United Kingdom, Europe
832-393312 - Salt dump, potash mining, railway tracks, Kolonnenweg, Lochplattenweg, Gruenes Band, border trail, former German-German border, Philipsthal, Werratal, Hersfeld-Rotenburg district, Hesse, Germany, Europe
860-288801 - Clay loaded with iron oxides and dried out, Rio Tinto, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.
860-288798 - Reflections on Rio Tinto, near its source, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.
860-288800 - R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.
860-288799 - R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.