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Spokane, Washington  Est. May 19, 1883

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This map answers earlier query: how close the two Libby mines would be

We didn't take the time earlier this morning, when posting about the proximity of the proposed Rock Creek Mine and the proposed Montanore Mine, to get down a little deeper.

We should have known the USGS has the maps to answer the key question behind that earlier post: namely, how near would the two mines be, if they ever opened?

The map here, provided at this link as a USGS publication, shows that both mines would be working the same formation, the Revett Formation.

If this map is accuarte, the mines would be roughly three to five miles apart and approached from different directions. Both would be operating below the Cabinet Mountains Wilderness Area.

The Rock Creek proposed mine is to the left of the Montanore proposed site. The Troy dot closer to Libby is the operating silver-copper Troy Mine, operated by Revett Minerals.

A Revett Minerals spokesman contacted us after the first post went live, to inform us that the two mines would be distinct, but would both drill the same formation of copper and silver.

There are many miles to go before either mine clears all the hurdles.

The Spokesman-Review business team follows economic development in Spokane and the Inland Northwest.