Our club in Airdrie has a Gas Plant at the left end of the flight line. The plant provided the land for the club with the understanding flying over the plant was unaceptable. I was flying my Mustang at the far left end of the field trying to stay away from the plant. There was only one other pilot flying and he continually entered my end of the field crowding me towards the plant. A few times it appeared we were very close. I announced my intention to land but before I could enter the pattern he again entered my space. His prop and stab cut half of my wing off so I throttled back and watched the death spiral. He landed safely. As I gathered up the pieces(never found the outer wing) he calmly walked over and asked if I was not going to repair it would I give it to him. I accept these collisions happen but he had lots of space to fly in away from me. Asking for the remains was really uncouth. I never flew at the same time with him again. I'm not sure if it was a lack of control or a lack of brains but I never lost any sleep over it. I think if you watch at your field you will know who to stay away from. Just my one time at band camp story.