Minnesota's top mining regulators assured legislators Tuesday that the state laws that are designed to protect future generations from the unpredictable costs that could come from decades of mining pollution are among the strongest in the nation.
Speaking at a packed and frequently testy public hearing, Jess Richards, director of lands and minerals for the Department of Natural Resources, said the state's laws "are robust" and designed to protect taxpayers now and in the future.
The DNR is the lead agency on the environmental review of PolyMet Mining Corp.'s proposed $650 million copper mine near Hoyt Lakes. Richards was the star witness in an unusual public hearing on the debate regarding what would be the state's first copper nickel mine, one that represents two divergent views of Minnesota's future.
Richards said mining regulators are in the process of reviewing some 200 mines around the country that have sophisticated financial agreements known as "financial assurance" that ensure environmental calamities, defaults and prolonged water treatment will be paid for by mine owners and operators, not taxpayers.
At issue is an open pit copper mine proposed for Minnesota's Iron Range that would create up to 350 long-term mining jobs and hundreds of temporary construction jobs, leading to a groundswell of support among mining advocates. But it also carries different and greater environmental risks than the incumbent taconite industry, because copper and other precious metals are mined in ore that contains sulfides, which can produce acid drainage and other heavy metals in ground and surface water.
It could require sophisticated water treatment plants to operate for decades and or even centuries after the mine closes.
PolyMet, a Canadian company that has proposed what could be the first of many such mines in Minnesota, says that long-term water treatment and modern mining techniques will protect the water.
The tone for the nearly six-hour hearing was set just as Rep. Jean Wagenius, DFL-Minneapolis, opened the hearing and Rep. Paul Torkelson, R-Hanska, interrupted her to ask whether the committee was the appropriate venue to discuss PolyMet and the state's financial assurance laws.