Steel mill slag rake adapted from what looks like a Russian T-54/T-55 tank.
https://s3-us-west-1.amazonaws.com/h..._slag_tank.jpg
Previously:
https://www.homemadetools.net/forum/...249#post150138
https://www.homemadetools.net/forum/...782#post133202
https://www.homemadetools.net/forum/...931#post148785
https://www.homemadetools.net/forum/...3329#post98769
https://www.homemadetools.net/forum/...785#post124283