why not just drop big rocks?

CTB:

Watch your backside, bro! Such radical suggestions of practicality could put all the concrete people out of business along with the rest of us. From rock to Iraq. I'm sure the limestone bakers & gravel diggers are working on developing a very large Military/Industrial lobby to make up for the diversion of billions of dollars away from Pork Barrel Interstate & Instate Thruway construction.

][<en