Phineas Gage was a 26 year old that worked with T.N.T to put tunnels though the mountains for railroads.
Phineas got distracted by something and forgot to put the sand in the hole ,so the mounting stick went through his head.
His men brought him to nearest town to bring him to the doctor.When the doctor examined he saw a straight hole through his head. Phineas could not walk properly so he could't go to work any more. The part of the brain was damaged was that part were the middle of the brain couldn't go to the front of the brain.