Coal Age: Seal Construction at the Cardinal Mine
Moving from the No. 11 to the No. 9 seam, Warrior Coal reclaims assets and seals old works
“From a regulatory point of view, only a limited number of 120-psi seal options have been approved by the Mine Safety and Health Administration (MSHA) that can be constructed in heights that are approximately 30 ft. After discussing plans with seal contractors and MSHA, Warrior Coal selected the Micon 120-psi Main Line Hybrid II Seal. Based upon the range of height expected, the large seal according to the Micon seal specifications would be 10 ft to 12 ft thick.”
Install and pressure grout (16) 40′ hollow core anchor bolts and (12) 20′ packer holes. Install 10,500 sq/ft Geogrid on highwall above (4) projected mine openings w rock bolts. Install covered from first bench to and including both sides of the mine openings.
Injection of material in advance of highwall miner into uncharted auger holes . Setup onsite beside highwall miner pumping material as mining progressed.
Drill and inject chemical grout (21) holes 30′ deep above portal entries.
Big seals & small seals
PUR polyurethane grout
Seal ring grouting
Shaft repair & stabilization
Ventilation seals & stoppings
Explosion seals (call for MSHA installation guidelines & approvals) (create mobile phone link to click to call)
Conventional stoppings – 20, 50, 120 & custom psi
Patented engineered design solid concrete masonry unit and proprietary SIGNUM & Hybribond seals for life of mine
ZERO structural failures in over ___ installed
Impoundment retaining structures
Gas well sealing – specializing in unmapped & uncharted
Underground borehole plugs & sealing
Turnkey design engineering & construction
Supports & cribbing
Armored stackable supports
Pumpable fabric cribs