- Red Rock Granite Inc.
- Address: 1406 State Hwy 107, Mosinee, WI 54455
- Fax: 715.692.3730
- Phone: 715.692.2414 or 877.743.2414
- Email: redrock1@mtc.net
- Web: www.redrockgraniteinc.com
- Jack L. Koss - President
- Peggy E. Koss - Vice President
- Adam C. Koss - General Manager