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100
years developing innovative solutions that solve problems
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600+
employees nationwide
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16
academic studies investigating the ability of SGI minerals to capture CO2
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2.1M+
North American homes protected annually with asphalt roofing shingles using SGI granules
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22
safety and environmental excellence awards earned
Improving Lives With High-Quality Materials.
Our innovative thought and leading-edge technologies support the development of roofing products that protect homes; building materials that make roads and construction projects sound; and agricultural products that promote healthy soils.