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Welcome
Glass Mtn. Pumice, Inc. produces superior lightweight aggregate from a shield volcanic deposit near Medicine Lake in the pristine cascade range of Northern California. The current mine and plant have been in continuous operation since 1977. We are capable of producing aggregate for:
- Lightweight Concrete Block
- Lightweight Structural Concrete
- Lightweight Precast Concrete
- Lightweight Roof Tile
- Horticulture Use
- Decorative Lightweight Landscaping Boulders and Planters
- Lightweight Backfill
- Exterior Stone Veneer
Let us provide you with lightweight aggregate for your specific industrial needs.