Black Hills Bentonite CO Claim Listing Return to Directory Rating (average) (0) Business Genre Manufacturing, Mineral Business Website Address bhbentonite.com Business Address, City PO Box 9, Mills ZIP Code 82644 Business Phone Number 3072653740 Business Fax 3072358511 Ratings There are no reviews yet. Please login to leave a review. Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?