Modern mining is nothing like it was a century ago. Today's massive mines are highly mechanized and use chemicals toxic to aquatic life to extract copper, gold, uranium and other metals from ore. A recent comprehensive study of modern U.S. mines challenges the perception that today's practices are adequate to protect water quality. The study reviewed 25 Western mines, and found more than three-fourths resulted in water pollution.
According to the Environmental Protection Agency, headwaters of 40 percent of Western streams are polluted from mining, and cleanup costs are estimated at $32 billion to $72 billion. Such persistent water contamination threatens drinking water, valuable fisheries, wildlife, agriculture, recreation, tourism, human health and industries that rely on clean water.
Numerous examples of valuable fisheries and aquatic ecosystems harmed by metal mining exist across the West:
• The Formosa Mine in Oregon, which operated from 1990 to 1993, has contaminated 18 miles of Umpqua River watershed, and it releases approximately 5 million gallons of acidic water annually.
• The Zortman Landusky Mine in the Little Rockies of Montana has polluted a dozen streams, and its acidic runoff is expected to continue for the foreseeable future.
• The Summitville Mine in Colorado eliminated all fish from a river reach and a reservoir where historic acid mine pollution had already reduced fish numbers.
• The Kensington Mine in Alaska, permitted in 2009, disposed millions of tons of mine waste into Slate Lake, eliminating the entire native fish population.
Healthy, sustainable fisheries support important local and national economies and depend on clean water and healthy watersheds. Recreational fishing generates over $1.2 billion in annual revenue from public lands. We published an article in the July 2010 issue of Fisheries, where we recommended a number of policy changes to update the esoteric Mining Law of 1872 law, including:
• Establish clear environmental standards.
• Allow federal land managers to balance mining with other public land uses rather than giving primacy to mining.
• Designate sensitive lands and waters off-limits to hardrock exploration and development.
• Restore fish and wildlife habitat to pre-mining or reference conditions.
• Prohibit mines likely to result in perpetual water pollution and/or requiring perpetual water treatment.
• Prohibit mine discharges to surface or ground water that degrade water quality and improve mine monitoring and enforcement of regulations.
• Increase pre-mining financial responsibility of permittees.
• Create funds and Good Samaritan legislation to aid in clean up of abandoned mines.
Mining is an important industry. But it is unwise for it to continue to operate at such great expense to clean water, healthy fisheries, and taxpayers. The week before Thanksgiving, Rep. Edward Markey of Massachusetts introduced a mining law reform and abandoned mine clean-up bill (H.R. 3446) which tackles many of these important issues. We encourage Congress to bring our nation's mining law into the 21st century. It's long overdue.
Eric J. Wagner is a fisheries researcher with the Utah Division of Wildlife Resources. Contributors to the column include fisheries scientist Kitty Griswold; Robert M. Hughes, senior research scientist at Oregon State University; Thomas P. Quinn, professor in the School of Fisheries and Aquatic Sciences, University of Washington; Carol Ann Woody, proprietor of Fisheries Research & Consulting in Anchorage, Alaska; and John D. Woodling, proprietor of Woodling Aquatics in Grand Junction, Colo.