Headquartered in Hagerstown, MD, SGI is a leading mining and mineral processing company specializing in the development of roofing products, building materials, and soil amendments …

With over 90 years of superior service, Specialty Granules (SGI) is a leading aggregates and mining company supplying specialized products to the North American building materials …

SGI is a leading mining and mineral processing company specializing in the development of roofing products, building materials, and soil amendments for agriculture. Headquartered in …

Specialty Granules (SGI) is a leading aggregates and mining company supplying specialized products to the North American building materials industry. With over 90 years of superior …

SGI has since those times provided high-quality specialized products to the North American building materials industry for over 90 years. Interestingly, 98% of the plant's business is in …

Specialty Granules (SGI) is a North American aggregates and mining company. [20] In September 2021, Standard announced the $7 billion acquisition of W. R. Grace & Co., an American …

Locations. Hagerstown, MD Corporate Headquarters Research & Development; Blue Ridge Summit, PA Charmian Plant; Waynesboro, PA Customer Design Center Pelletization Plant

Specialty Granules LLC, Hagerstown, Maryland. 645 likes · 19 talking about this. From the roof, to the road, to the dinner table, our rocks improve lives 🪨.

SGI is headquartered in Hagerstown, MD, and has six plants strategically located across the U.S. Plants in Blue Ridge Summit, PA; Annapolis, MO; Pembine, WI; Trona, CA; and Ione, CA, are …

SGI’s newest plant, located in Waynesboro, PA, repurposes rock “fines” — a byproduct of the granule manufacturing process — to create products used in agriculture to help increase crop …