Here we removed an old steel casing which was not plumb. We had to perform an elevator jack hole modification and remove the old steel casing so that the new PVC and cylinder could be installed correctly.
This existing elevator jack hole had improperly installed casing which needed to be corrected. In this case our company drilled out the old steel casing (CMP) and installed the correct heavy wall steel casing.
On this existing elevator re-drill hole, defective CMP material had been used, so we had to remove the defective steel from the hole to allow installation of the correct material.
“Specialized Drilling Operation”