Company Overview

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 industry. Headquartered in Hagerstown, Maryland, SGI has four production plants strategically located nation-wide. SGI maintains a commitment to service based on an in-depth understanding of customers’ needs and an ability to translate that knowledge into innovative products.

SGI is an operating subsidiary of Standard Industries. Standard Industries is a global, diversified holding company with interests in building materials, aggregates, and related investment businesses in public equities and real estate. For more information about Standard, visit

© 2017 Standard Industries Inc.

Privacy Policy | Terms of Use | Idea Submission