TRAVELING TOO FAST DOWN AN INCLINE, HE TRIED TO SLOW DOWN BY APPLYING LEFT BRAKE. HE APPLIED TOOHARD AND THE ENGINE WAS NEUTRALIZED. STEERING BECAME DIFFICULT AND HE LOST CONTROL, SIDE-SWIPED A PICKUP, RAN UP A BERM AND TURNED ON IT'S SIDE.HE RECEIVED MINOR CUTS AND SCRAPES ON LEFT LEG. THE ROCK BREAKER IS REPAIRABLE.