Grupo México Facility Temporarily Closed After Sulfuric Acid Spill

Published: Monday, July 22, 2019 - 6:13pm
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Mexico's environmental protection prosecutor (PROFEPA) partially and temporarily closed Grupo México's facilities in the Port of Guaymas.

Mexico’s largest mining company, Grupo México, has come under fire in recent weeks for spilling 3,000 liters of sulfuric acid into the Sea of Cortez on July 9. Now, the company’s facilities at the port of Guaymas, Sonora, have been partially and temporarily closed.

Mexico’s environmental protection prosecutor (PROFEPA) said in a news release Saturday that it ordered the closure because Grupo México did not have proper environmental impact permits for its activities.

According to the press release, all of the company’s “operations and activities related to the storage and maritime transportation of sulfuric acid” are being temporarily shut down as a safety measure. A few other construction-related operations will remain active.

Some Sonorans, however, say closing this site is insufficient.

“The government needs to take drastic measures against Grupo Mexico. The most drastic that they can,” said local organizer Rosa María O’Leary. “They need to act with more force against this business that has generated so much disaster in Sonora, and in Mexico and around the world.”

O’Leary said closing the Guaymas facility will have little impact on the large company. She and others hope to see the company stripped of its mining concessions, not only because of the recent acid spill, but because of a history of environmental damage.

Last week, Mexico's environmental agency (SEMARNAT) announced that it was investigating 22 cases of environmental damage against Grupo México. That includes one of the worst environmental disasters in Mexico's history. Five years ago, in August 2014, Grupo México’s Buenavista copper mine spilled 10 million gallons of copper sulfate acid solution into the Bananuchi and Sonora rivers. 

Grupo México did not respond to request for comment, but has said the acid spill was minor.

The company is among the world’s largest copper producers, with Asarco, a U.S. subsidiary, based in Tucson.

Fronteras Sonora