At approximately 14:55 hrs On 13th February 2021, the operation was backing off the continuous rod from the bottom stuck overshot (stuck with the body of the tubing). After TBT crew Installed two pipe wrenches on the continuous rod and started turning anticlockwise to release the connection of the overshot. Two employees were on each pipe wrench. Suddenly the lower pipe wrench slipped off, the torsional force causing the upper pipe wrench to rotate hitting derrick man in his right hand causing him falling and continued rotating and hit Driller in his back