Shadow Rathole Drilling is a privately owned drilling company founded in 1979.They are based out of Grande Prairie Alberta with a secondary shop location in High Level, Alberta.Shadow is specialized in Ratholing with fully contained hammer units designed for vertical and horizontal driving. Ex: Conductor casings and river/road crossings.These hammer units are suited for unfavorable drilling conditions and are a great alternative.Shadow also specializes in commercial and residential pilings of almost any size. more... See more text