Rock.
Anyone who’s ever put a shovel in the dirt of North Springfield knows there’s a lot of it — tough rock. Mean rock. 11 years ago today a bulldozer driver found out just how mean …
A squadron of big, tough Caterpillar D11 bulldozers occupied the airport that morning. They moved dirt and rock for construction of the new terminal.
Lots of back and forth between the contractors: “Can we bulldoze that rock or will we have to use dynamite?”