Underground Mining Museum Mining at this web site continued till 1967, marking the end of underground iron mining in the space. The Iron Cliffs Company was established in 1865 by a bunch of New Yorkers together with Samuel J. Tilden. They obtained property in Marquette County and opened their http://zanderxczaz.blogkoo.com/geologic-characterization-of-a-bakken-reservoir-for-potential-co2-eor-23023618