Gold is heavy. Reminds me of the movies like Indiana Jones where average-build actors lift up gold bricks that should weight 80-100 lbs. each like they were boxes of business cards
At Gold Reef City in Johannesburg, South Africa, a theme park built on a defunct gold mine, they do a presentation on gold mining and live pouring of a bar of gold. At the end, you're invited to walk out with a gold bar if you can pick it up by its sides with one (bare) hand. Last time I was there, nobody had managed to do it yet...
This must be a common gold mine thing as I recall seeing them do it at the Red Lake gold mine in Ontario Canada too on the show "Ed's Up"