mining and tunneling
Underground Mining
Underground Mining
Caltrain Electrification Design Build Services
San Francisco, CA || Contract Value: $26.1M || Owner: The Peninsula Corridor Joint Powers Board || General Contractor: Proven Management, Inc. || Scopes: Tunnel Liner Repair, Contact Grout, OCS (Foundations, Micropiles, Canopy Tubes, Wire Installation)
Stillwater East Boulder Mine
Contract Value: $67.8M || Owner: Sibanye Stillwater || General Contractor: Drill Tech Drilling & Shoring, Inc. || Scopes: Tunnel Rehabilitation, Shafts, Mine Ground Support
FCWA Occoquan River Crossing Tunnel
Lorton, VA || Contract Value: $5.9M || Owner: Fairfax County Water Authority || General Contractor: Garney Companies, Inc. || Scopes: Tunnel, Shafts
Calaveras Dam
Sunol, CA || Contract Value: $15.5M || Owner: San Francisco Public Utilities Commission || General Contractor: Flatiron || Scopes: Soil Nail Walls, Rock Bolts, Tieback Walls, CSM/DSM, Tunnels, Shaft, Compensation Grouting