Largest Sewer in Latin America being constructed in Mexico

Posted on August 22, 2014 • Filed under: Mexico reported ZUMPANGO, Mexico (AP) Some 110 meters (120yards) beneath a Mexico City suburb, a boxcar-size machine digs Latin America’s largest sewer. The drill developed by U.S. based The Robbins Company uses pressure, water, chemicals and cutting bits to bore a hole the width of a three-lane highway through rock and other terrain. Behind it, the Eastern Discharge Tunnel seems to stretch into infinity. The machine advances along a railroad track at a rate of 30 yards (meters) a day as workers inside reinforce the freshly made sewer with concrete supports. Read Article

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