ST. CLOUD, MN -- Members of the Midwest Chapter of the Natural Stone Institute (NSI) will gather on Wednesday, August 1, 2018 to tour Coldspring’s NSC 373 Platinum Certified Charcoal quarry and discuss how sustainability impacts a business. The quarry is located within a city, surrounded by residential homes and schools. A panel discussion will take place after the tour at the Holiday Inn located at 75 37th Ave. S in St. Cloud, MN, that will focus on the NSC-373 sustainability certification of natural stone. The discussion will focus on how sustainability has evolved over the years and how it impacts a business. The panel members will share how Coldspring was able to certify its operations and why it is important. By attending this event, you are eligible for CEU credits.