“I just want to let you all know what an awesome job Cristian Penson and his crew did in the time that they were here in WV. These guys worked hard, kept their jobs nice and free of trash and debris, were very courteous to myself and my crew. Their quality of work was above and beyond. We set deadlines for him and his crew. We had scheduled to complete a 166’ slip repair in [Monongalia County] on 6/15/19 and they completed this project a day earlier than scheduled plus a 58’ slip that we added to him. Hats off to these gentlemen for a job well done!!! We hate to see Cristian and his crew leave [our district] but he will always be welcome back.“
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.