ANCHORAGE (AP) -- A truck pulling trailers loaded with zinc concentrate on the Red Dog Mine haul road spilled about 10 tons of the material Friday.
The spill occurred about 7:30 a.m., when the driver of transport truck operated by contractor Nana-Lynden pulled to the side of the road, said Dick Roper, manager of Nana-Lynden's Red Dog operation.
The second of two trailers attached to the truck overturned on the soft shoulder of the road, dumping the concentrate onto a gravel access road.
The spill had been almost entirely cleaned up by 6:30 p.m. Friday, Roper said. The state Department of Environmental Conservation is monitoring the cleanup.
Heavy metal contamination along the haul road has been under scrutiny since a National Park Service study released in June found high levels of contaminants along a section of the road that runs within Cape Krusenstern National Monument.
Tom Chapple, DEC's director of air and water quality, said that the Park Service study did not indicate that truck spills were the cause of the high levels of contamination along the road. Rather, he said, the contamination is likely due to dust blowing from trucks in transit.
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