INJURED PERSON WAS OPERATING A ROCK TRUCK AT A STRIP SITE. ABOUT 6 HOURS INTO HIS SHIFT HE NOTICED THAT HIS BACK WAS HURTING PRETTY BAD. HE WAS DIAGNOSED AS HAVING BACK PAIN WITH GRADE1 SPOND YLOLISTHESIS. HE WAS GIVEN A PRESCRIPTION AND TOLD TO WEAR A BACK BRACE.