As told by GSI Project Development Engineer: I just chatted with [the] Operation Manager for the Hwy 3 Char Creek project. He is extremely pleased with the way we are progressing, and very impressed with Matt and the crew’s professionalism and communication. I understand several Ministry reps were on site and given the red-carpet treatment and full briefing. They were pleased with the visit. Also, through all the years of work [he] had never experienced such a positive Workers Compensation Board safety inspection. In a thorough inspection that was nearly 2 hours in length, I understand the only comments the inspector could come up with were:
Nice work Gentleman!
A variation of karst sinkhole grouting is the grouting of mined coal seams and workings located below existing infrastructure that exhibit the potential to propagate to the surface and cause sinkholes and/or subsidence.