511. Standing Horn 512. Bookkeeping 513. Airline Flight Attendant 514. Marching Band, Playing an Instrument, Walking, Brisk Pace, General 515. Coal Mining, Coal Extraction 516. Custodial work, light effort (e.g., cleaning sink and toilet, dusting, vacuuming, light cleaning) 517. Farming, light effort (e.g., cleaning animal sheds, preparing animal feed) 518. Farming, Driving Tasks (e.g., Tractor or Harvester) 519. Farming, Hand Milking, Cleaning Pails, Moderate Effort 520. Firefighters, Raising and Climbing Ladder with Full Gear, Simulated Fire Suppression 2 521. Firefighters, Hauling Hoses on Ground, Carrying/Hoisting Equipment, Breaking Down Walls, etc., in Full Gear 522. Firefighter, Rescue Victim, Automobile Accident, using Pike Pole 523. Fishing, Commercial, Moderate Effort 524. Fishing, commercial, vigorous effort 525. Hunting Large Marine Animals 526. Hunting Large Game, from a Hunting Stand, Limited Walking 527. Hunting, Duck, Wading 528. Pistol Shooting or Trap Shooting, Standing 529. Cleaning, Sweeping Carpet or Floors, General 530. Mopping, Standing, Light Effort 531. Window Cleaning and Washing, General 532. Food Serving, Table Setting, Implied Walking or Standing 533. Vacuuming, General, Moderate Effort 534. Putting away groceries (e.g. carrying groceries, shopping without a grocery cart), carrying packages 535. Food Shopping with Grocery Cart or Without, Standing or Walking 536. Non-Food Shopping, With or Without a Cart, Standing or Walking 537. Knitting, Sewing, Light Effort, Wrapping Presents, Sitting 538. Laundry, drying, washing by hand, moderate effort 539. Making the Bed, Changing Linens 540. Implied Walking, Putting Away Household Items, Moderate Effort