The pic is from the Worlds in Gothenburg 1983.
The biggest guy in that pic is the guy with the back towards the cam, Lars Hedlund. Didn't compete, injured his knee while competing in WSM I believe.
From what I've been told, weighed 400 lbs @ cerca 6'5''ish at his biggest, seen pics of him with SHW's of that era, totally dwarfed them.
Bigger than Kaz, but obviously Kaz was a better strongman competitor.
The guy farthest to the left is some weird guy, who always acted the back spotter @ the Worlds, for years. Had glasses that made him look like a pimp. Or a serial killer. Anyone knows his name?
The big black dude is John Gamble, winner of the 275's. Thick as a brick, especially the traps.
Also looks like RDC and Mike Bridges.