The Red River area in Spain along the coast the river Tinto copper mining are gold, silver and other minerals since ancient times (approximately 5 thousand years before) As a result, the water in the river is very high acid value. Best reasons for include red, because the rocks on the river also contains iron in quantity, this concentration in the mine closed it 10 years ago, but due to the higher-price-copper. The owner of the mine, it plans to open a copper mine again in the next year.
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