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 privately-held global industrial company operating in over 80 countries. The Standard ecosystem spans a broad array of holdings, technologies and investments—including both public and private companies from early to late-stage—as well as world-class building materials assets and next-generation solar solutions. For more information about Standard, visit

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