Using drills and high impact vibratory tools (bucking, riveting), in addition to screwdrivers, lock bolt puller, power screwdriver, C-squeeze, ratchet wrench, nut runner, torque wrenches, crimpers, cable tools and various other hand tools. " Continuous (6-8 Hrs) Flexion/extension (head bent down, head bent back), handling, kneeling, bending at the waist, reaching (overhead), Lying down (back, side, front), rotation of head/neck, standing, twisting at the waist, walking.