Watch CBS News

Minn. Regulators To Review Proposed Mine Expansion

DULUTH, Minn. (AP) -- Minnesota regulators will review the proposed expansion of a taconite mine after environmentalists warned of potential water pollution.

Northshore Mining wants to expand its mine near Babbitt. But the Duluth-based environmental group Save Our Sky Blue Waters says expansion could mean digging taconite out of a new area with rock that has a higher-than-usual sulfide content, which the group says could lead to acid mine drainage off the site.

The group petitioned the Department of Natural Resources for an environmental assessment worksheet, but the DNR declared the request moot because Cliffs Natural Resources, which owns Northshore Mining, filed its own request for a review.

The potential for acid runoff has fueled the debate over whether the state should allow copper-nickel mining in northeastern Minnesota.

(© Copyright 2013 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.