Using feathers and wedges

Chicago O'Hare digs up 50-ton boulder under airfield, asks public for name ideas

“Tangent time: I've got a smaller one in my yard, and I've got a set of feathers and wedges to avoid having to dig it all up at once. Here's a video of someone using feathers and wedges to split granit…”— mikewarot, when sharing this video · read the comment ↗