This video from Modern Goldsmith demonstrates how to extract pure gold from a raw mineral blob.
Corroded wire rope leads to crane failure on bulk carrier
Compressor cracks cited in Canadian helo crash
Fractures in the sixth-stage compressor wheel triggered a catastrophic engine failure and caused the April 2022 fatal crash of a Kestrel Helicopters 1981 Hughes 369D during long-line slinging operations in British Columbia, according to a recently released report from Canada’s Transportation Safety Board.





