I saw a TV story about this maybe 30 years ago. They showed everything but if I remember the secret location was on the Mississippi.
Bump
Cool story. I didn’t know they used mud.
The mud left over is sold to Democrats who have an inexhaustible supply.
This story is so weird to me from start to finish.
Hard to believe no one spied on him to try to figure out the location. Hard to believe no one else figured out how to do this.
But hey, rock on for genius and marketing.