Walking at a rate of 2 - 3 miles per hour Sewing with machine Scrubbing floors Cleaning windows Ironing Typing (mechanical or Electrical) Light machine work (engineering) Draughtsmen Light assembly line Filing with large file Light work in laying stones or Bricks
Walking at a rate of >3 - 4mph Shovelling Hewing with pick Forging
Tending the heating furnaces
* Taken from Physiology in Industry by Lucien Brouha