MADISON, WI (WTAQ) - Special interests who support a new mine for northern Wisconsin have donated $610 to state political campaigns for every one-dollar given by mining opponents.

That’s what the Wisconsin Democracy Campaign announced Monday.

The watchdog group said those backing the proposed iron ore mine gave over $15-million to Governor Scott Walker and lawmakers from 2010 through June of last year.

Environmental groups that oppose the mine gave just $25,000 in almost an identical time period.

The Republican Walker’s campaign received over $11-million dollars from mining supporters, while lawmakers got just over $4 million. 

Walker campaigned around the state in support of relaxed mining laws and shorter time limits for approving Gogebic Taconite’s request for a new iron ore mine in Ashland and Iron counties.

The Democracy campaign said the construction industry gave the most – over $4 million to mining supporters. Republican finance co-chair Alberta Darling received the most from supporters among legislators – just over $467,000.