Precision Drilling Corporation
A Calgary-based contractor that drills onshore wells for oil, natural gas, and geothermal energy companies across North America. Founded in 1951 with a single rig, the company chose the name "Precision" to signal its commitment to technical accuracy. In the 1960s it pioneered the "Deep Freeze-Hole" technique to sink shafts through waterlogged potash formations in Saskatchewan.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.