Mines in Porter County, Indiana

Mine	Commodity	Type	Status	Source
No 1	Construction Sand and Gravel	Surface	Active	MSHA
Portage Operation	Crushed, Broken Limestone NEC	Facility	Active	MSHA
Crisman Sand Company	Sand and Gravel, Construction	Surface	Producer	MRDS
Porter Co. Hwy Dept.	Stone	Surface	Producer	MRDS
Valparaiso Supt. Of Streets	Stone	Surface	Producer	MRDS
Box Sand Co Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Brown Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
C. Shrock Clay Pit	Clay	Surface	Past Producer	MRDS
Lorenz Brothers Pit Number 1	Clay	Surface	Past Producer	MRDS
Zehner Pit	Clay	Surface	Past Producer	MRDS