[Steely Tom]

I was exploring with some friends at a construction site, when I was nine or ten. There were some open pipes that were maybe 10 or 12 inches in diameter. I dropped a stone into one, and couldn't believe how long it took to hit the bottom. Two or three seconds. Three seconds would be around 140', not counting air resistance. Is that possible? I think they were building something tall, but it was a long time ago.

Not quite large enough for me to fit into, but still it gave me the willies.

[HandyDandy]

Construction sites: the crew was wrapping up for the day and needed a sheet of plywood to block up an opening, just for the night. One worker remembered seeing a sheet laying flat, out behind the work site. He hustled his way toward where he’d seen it and it was still there. He bent down, slipped his fingers under the edge and jerked it up to hold it up so he could lift it. As he did this he stepped forward. Welp, he dropped straight down into the big hole that the sheet of plywood was covering, and then the sheet lay back down over the hole and covered it. The end.