LOADER OPERATOR CARRYING CLAY TO BUILD CLAY BERM, WENT OVER EDGE & ROLLED LOADER DOWN BANK. HE HAD TIRES UNEVEN TO EDGE OF BANK & BUCKET UP IN AIR WHEN HE BEGAN TO DUMP, THE WEIGHT SHIFTED & CLAY GAVE WAY. LOADER ROLLED APPROX. 30'. OPERATOR WAS SORE BUT NOT SERIOUSLY HURT. LOADER HAS COSMETIC DAMAGE.