YouTube/Third Row Tesla Elon Musk said on a podcast that his least favorite job was a short-term position at a lumber mill when he was a teenager.
The job required him to shovel "steaming" sand and mulch out of a wood-pulp boiler.
The job was dangerous, Musk said, since it would be hard to get someone out of a boiler in an emergency.
Workers in and outside of a boiler would have to switch positions every 15 minutes so they wouldn't get hypothermia.