Mobile utility lunar excavator

The MULE (named with all capitals) is a robotic terran mining vehicle. It is still in the prototype stage and has a limited battery life.

Game Unit
MULEs are summoned from an orbital command and arrive via drop pod, with one MULE per drop. MULEs have a limited life span. They cannot build or repair like the SCV, but they can mine resources.

MULEs can carry three times more minerals than SCVs and can mine from the same mineral patch as an SCV.

Development
MULEs used to have attack and repair capabilities but lost them as of April 2009.

Trivia

 * A mule is an eponymous beast of burden and the name been applied to other objects with similar aspirations.