Explode a rock barricade?

[Froge]

I haven't found a thread or a video on this yet, so I suppose this might be a bit complicated to script. In fact, I'm posting this topic because I actually have no idea where to even start.

You guys know the rock wall in Storage that needed to be taken out with an explosive? I'm trying to replicate the same explosion and clearing of path, only with the hammer and chipper (the combined item) instead. I'm not very certain on what scripts to use. Could any of you guys help me here?

Edit: I'm guessing on the level editor I'll need to place a bunch of rock entities to block a path, then fill the area where they're placed up with a script that indicates where the explosion will happen. In terms of actual scripting though, I'm clueless; I have no idea how to script the removing of the rock entities.