1910 QMC Smelter; what company owns the shafthouse on Houghton hill in background, top left? (From HAER LGK)12/11/05 at 11:56guest: The shafthouse on the hill in Houghton is the old ...
1910 QMC Smelter; what company owns the shafthouse on Houghton hill in background, top left? (From HAER LGK)07/08/05 at 19:50guest: what do you know about the mine/town at Gratiot Lo...
1910 QMC Smelter; what company owns the shafthouse on Houghton hill in background, top left? (From HAER LGK)07/01/05 at 09:53guest: Isle Royale Copper