Overcasts & Stoppings


GMS Mine Repair & Maintenance offers a full line of pre-fabricated overcasts. Designed to be mobile and reusable, the GMS overcast product line is engineered and designed to meet any customer needs. The modular steel overcast have become a customer favorite as the product is durable enough to be permanent, but can be disassembled and reused for temporary air flow control in other mine locations if needed. Install crews can erect these overcasts and have them prepped for production usage in one shift without lifting equipment or special tools making the product an affordable solution for any mine. GMS offers overcast installation and consulting services in addition to this product line. This product has passed MSHA Suitability test: MSHA-ST 35.

Gunite Reinforced High Pressure Overcast
  • 1.5 x 2" Gunite Walls
  • Can achieve 100% percent efficiency
  • Great for permanent Overcast / Undercast system
  • Pre-gunite application water gage - 8-9"
  • Pre-gunite application water gage - 24-26"
Steel Modular Overcast / Pre-fab
  • MSHA SUitability Tested; MSHA Suitability Number: MSHA-ST 35
  • Fully engineered and designed to customer specifications
  • Overcast is mobile reusable