When mounted on a cart using the Cart Assembler, the Basic Drill tool will allow the cart to dig through the earth. As the cart makes its way down its track, the Drill will dig a 3x3 tunnel, with the cart itself centered in the bottom row. Any collected resources from digging will be stored in the carts Storage modules. The cart will continue down the track as far as the track goes, or until its inventory is full. It will then return to the beginning of the track. Adding a Railer or Large Railer enables the cart to place its own track as it goes, until it runs out of track to place.
Only a single tool is allowed per cart.
Digs a 3x3 tunnel through the earth along its track.