Employee was driving a haul truck on the travelway when the truck hit a pothole causing the truck to jerk. Employee was holding handhole in cab, felt numbness of finger. Injury reported 8/15 but occurred on 8/8. Medical treatment of dianostic testing performed. Deemed recordable by MD on 9/19 with referral to PT as MRI identified bulged cervical disc. * McHenry West Pit # 26.*