In early may, the NSA met in Charleston, SC for two and a half days of continuing education and strategic planning.   
The National Slate Association was first established in 1922 by producers of slate material. The goal was to promote the use of slate for roofing and structural applications. The standards set back then in slate roof materials and construction are still adhered to today. Shortly after its formation, the organization went inactive due to lack of cohesion in the industry. However, its primary publication, Slate Roofs, remained a valuable resource, continuing to be reprinted and used throughout the quarrying, construction, and design communities.  
In January 2002, a historic meeting took place in Saratoga Springs, New York. A steering committee of producers, roofing contractors, architects, building owners, and other interested parties convened to revitalize the National Slate Association. 
Today, the National Slate Association is dedicated to promoting excellence in slate roofing practices through the development and dissemination of technical information, standards, and educational resources on the materials and methods used in the manufacture, design, and construction of slate roofs and associated flashing systems. It's members include roofing contractors, slate quarriers and distributors, architects, architectural conservators, roofing consultants, craftspeople, building owners, facilities managers, manufacturers, educators, and others concerned with the manufacture, design, construction, and care of natural slate roofs. 
Worth Supply is proud to be an active member of the NSA and commits itself to the growth and promotion of the slate industry!!!  
Below: (NSA Group picture prior to boarding for a wonderful dinner cruise of the Charleston Harbor)