Star Wars and Wall-E sound designer Ben Burt used a hammer on a radio-tower guy-wire and a slinky for some of his sound effects. I think that is the sound that overlays the "Sound of Ice Cracking" posted and featured here on LiveLeak, but the recording is slowed down.
The guy-wire/slinky was used for the sound of lasers blasting in Star Wars.
The guy is the first video is NOT Ben Burt, but someone giving a demo.
Second clip is Ben Burt.