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Tuesday, July 31, 2012

Threat of Mercury Poisoning Rises With Gold Mining Boom

Nowhere is this problem of mercury contamination more urgent than in Colombia. Gold mining is Colombia’s fastest growing industry, with 200,000 small-scale miners producing more than 50 percent of the country’s gold. This growth has turned Colombia into the world’s leading per-capita emitter of mercury, especially in states such as Antioquia, where Segovia is located.
Ground-level concentrations of mercury gas in gold-processing hamlets like Segovia are so high, experts fear the outbreak of an environmental health crisis worse than any caused by mercury since Minamata, Japan, where releases of mercury from a factory in the mid-20th century killed more than 1,700 people. Last year, scientists working for the United Nations Global Mercury Project recorded levels of mercury gas in Segovia’s center — near public schools and crowded markets — 1,000 times higher than World Health Organization limits.

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