There were a couple of yocals that were charging people to haul old uprights away. Seems that they were charging $50 to $100 to move them, and even more if they were hard to move out of a house.
They were then taking the pianos, especially anything in poor condition, and burning them so that only the iron remained.
I am told that they did score a good piano once, for free. It was a small baby grand, made in the 1920's, by some known maker. It sold at a local auction barn for $1,800, and a dealer bought it to flip to a piano dealer. I am told he sold the baby grand to the dealer for $3500, IIRC. If the dealer paid $3,500 for it, and it still needed a full restoration...what on earth did the piano dealer get out of it, on the retail end?
Back to the burning of pianos. How does one burn a full upright piano? I've built a thousand camp fires, bonfires, and burned a bunch of brush in my day, and still can't imagine having a fire big enough to burn a full piano, LOL.