Unimin Corp Claim Listing Return to Directory Rating (average) (0) Business Genre Manufacturing, Mineral Business Website Address unimin.com Business Address, City PO Box 159, Roff ZIP Code 74865 Business Phone Number 5804567772 Business Fax 5804567405 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?