Can control blasting technique be used to remove a stuck pump from a borewell?


Our boreell in our farm is 500 feet deep. The submersible motor is at a depth of 300ft. We wanted to replace the cable wire which had worn out. While removing, a person had been helping with a small hammer which slipped and went inside the sidings of the bore. It got stuck close to the pump and now we are not able to pull up the pump. The pipes inserted are all GI pipes hence magnet cannot be used. Can control blasting techniqe be used? Please help

Thanking you,

Karn Singh