EE STATED THAT EE HAD DUMPED A LOAD OF POND SILT AND WAS TRAMMING BACK DOWN THE HILL FROM THE 14 CURVE WHEN EE APPLIED THE BRAKES BUT HAD NONE. EE STRUCK THE BERM TO SLOW/STOP THE TRUCK. EE WAS TRANSPORTED TO HARLAN ARH AND WAS TREATED AND RELEASED. THE DR. DETERMINED THAT AN MRI IS NEEDED AND TOOK EE OFF WORK UNTIL RESULTS ARE READ.