"A ship has to be specially insulated to drop down through an area where an energy drill is working. By-products, including excess charges, are shunted away skyward. But the fallout materials—if this world supports a native race, it's illegal, that kind of mining."
―Princess Leia Organa[src]

An energy drill was a mining tool that fired plasma bolts to disintegrate a target area in a process known as energy mining. The use of an energy drill caused excess charges to be launched skyward. Any vehicle not specially insulated that passed through the area suffered catastrophic damage and equipment failure. Because of the fallout and byproducts of energy drilling, it was forbidden by Imperial law on any planet with a native population. The Empire was known to violate this law in secret, as they did on Mimban during the Galactic Civil War.

In 2 ABY Princess Leia Organa, Luke Skywalker, C-3PO, and R2-D2 crashed on Mimban when their starfighters malfunctioned due to the fallout from an Imperial energy drill.