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Aurubis AG is listed on the stock exchange and is the largest copper producer in Europe and the largest copper recycler worldwide.
Sheridan Corp is a Fairfield, ME-based company in the Agriculture and Mining sector.
Amci is a Washington, DC-based company in the Agriculture and Mining sector.
Lilac Solutions is a lithium extraction company based in Oakland, California.
Goulding's is a Alton, IL-based company in the Agriculture and Mining sector.