It's wrong to blow someone up.
Spencer is an explosive expert working at the local mine where local teenagers have been trespassing at lately.
Spencer wants to stop the trespassing.
Spencer calls the local authorities to crack down on the trespassers since he is conducting blasts soon.
Spencer knows there are proper warning signs, so he initiates a mining blast despite knowing a trespasser is in the area.
Spencer is able to do his job effectively after the trespasser are thwarted by the local authorities.
Spencer is arrested and found guilty for his role in blowing up a trespasser.