511. Sitting Drums 512. Trombone Standing 513. Playing musical instruments, general 514. Standing Horn 515. Bookkeeping 516. Airline Flight Attendant 517. Marching Band, Playing an Instrument, Walking, Brisk Pace, General 518. Coal Mining, Coal Extraction 519. Custodial work, light effort (e.g., cleaning sink and toilet, dusting, vacuuming, light cleaning) 520. Farming, light effort (e.g., cleaning animal sheds, preparing animal feed) 521. Farming, Driving Tasks (e.g., Tractor or Harvester) 522. Farming, Hand Milking, Cleaning Pails, Moderate Effort 523. Firefighters, Raising and Climbing Ladder with Full Gear, Simulated Fire Suppression 2 524. Firefighters, Hauling Hoses on Ground, Carrying/Hoisting Equipment, Breaking Down Walls, etc., in Full Gear 525. Firefighter, Rescue Victim, Automobile Accident, using Pike Pole 526. Fishing, Commercial, Moderate Effort 527. Fishing, commercial, vigorous effort 528. Horse Racing, Galloping 529. Lawn Keeper, Yard Work, General 530. Property Manager 531. Heavy Duty Operating Equipment, Automated, Non-driving 532. Orange Grove Work, Picking Fruit 533. Printing, Paper Industry Worker, Standing 534. Shoveling and Digging Ditches 535. Standing, light/moderate effort (e.g., assemble/repair heavy parts, welding,stocking parts,auto repair,standing, packing boxes, nursing patient care) 536. Tailoring, Hand Sewing 537. Tailoring, Weaving, Moderate Effort (e.g., Spinning and Weaving Operations, Delivering Boxes of Yam to Spinners, Loading of Warp Bean, Pinwinding, Conewinding, Warping, Cloth Cutting) 538. Walking at Work, 3.5 mph, in Office, Brisk Speed, Not Carrying Anything 539. Walking, Pushing a Wheelchair 540. Running on a Track, Team Practice