United States Steel Corp.

US Steel Gets State Permits For Minntac Expansion United States Steel Corp. has now received the state permits it needs to expand its Minntac mine at Mountain Iron but is waiting on one remaining federal permit.
MPCA Board Approves Keetac ExpansionUnited States Steel Corp. has moved a major step closer to proceeding with a $300 million expansion of its taconite operation in Keewatin.
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