Mines in Mason County, Michigan

Mine	Commodity	Type	Status	Source
Ludington Pit & Mill	Construction Sand and Gravel	Surface	Active	MSHA
Dow Chemical - Ludington	Halite		Producer	MRDS
Dow Chemicals--ludington, Mich.	Magnesite	Processing Plant	Producer	MRDS
Dow-ludington	Magnesite	Brine Operation	Producer	MRDS
Johnson Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Ludington Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Ludington Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Harbison-walker	Magnesite	Processing Plant	Plant	MRDS
Keiser's Clay Pit	Fire Clay (Refractory)	Surface	Past Producer	MRDS
Ludington Mill	Sand and Gravel, Construction	Processing Plant	Past Producer	MRDS
Ludington Site	Silica	Surface	Past Producer	MRDS
West Branch Clay Pit	Fire Clay (Refractory)	Surface	Past Producer	MRDS