Nederland Mining Museum Mining at this site continued till 1967, marking the top of underground iron mining within the area. The Iron Cliffs Company was established in 1865 by a gaggle of New Yorkers including Samuel J. Tilden. They obtained property in Marquette County and opened their first mine, https://tyson4p9yx.theisblog.com/5878837/midwest-regional-carbon-sequestration-partnership