Firefighter suffers minor injury in Livermore brush fire

July 31, 2013 8:05:14 PM PDT
A wildfire on the Lawrence Livermore Lab property destroyed a trailer used by lab security.

One firefighter suffered minor injuries.

The fire broke out just before 4 p.m. Wednesday in an area known as site 300, which is near the lab's explosives testing area.

About 20 acres were charred.

The cause of the fire is under investigation.