Last night I was thinking about doing a quick Concrete study to help me better understand the physics of concrete, what it looks like after certain impacts, etc. I went to my father who is a petrophycisist and physics major. He sat down and gave me a talk on the physics of concrete which was very eye opening into the real/3d integrated world. I had a lot of fun in discussing all the statistics and decided to make my concrete project a simple sphere with 2 forces applied to the concrete to create the damage you see below. It was created by force 1 = Small plastic explosive from the inside, and force 2 = heavy impact from the outer concrete shell. The result is the model you see. I will implement this fun study project into a production project shortly.
P.S. I took the HP model from mudbox into 3ds max and created an in-game model for UT3. Snapshots are below. (I didn't build all of the lighting) "Model is imported into UT3 Map - War-Islander-"