My dad operated heavy equipment, he's considered one of the best. You wouldn't believe the innertubes he'd bring home that we'd use at the lake. You could stand on them, in the water.
Tangent: we have a picture of the Silver Spade, my dad took us to see it. I was just a baby, so I don't remember, but in the picture my mom is holding me and we're standing near the Silver Spade. My brother used that picture in a presentation for the organization for which he is Exec. Dir. I'll see if I can get a copy. But here is the now retired giant shovel.
http://www.constructionequipmentguid...hio-Lost/8312/