Mine & Tunnel Ventilation Duct Brochure

In 1960, our company built the first filament winding machine to produce FRP mine ventilation duct, and started an entirely new industry.  These first non-metalic ducts were a big improvement over the heavier and conductive metal ducts.  Our mine and tunnel ventilation ducts maintain a MSHA approval as a Class 1 rated duct system, and have been used in mining and tunneling applications now for 54 years.  Spunstrand Inc. has a variety of duct configurations available to suit the needs of most any situation our customers may encounter.