J.C. Hise? Paul Anderson?
Actually, me. Multiple sets with 515 lbs to 535 lbs. The only exercises I was strong on were those for the legs. I was introduced to the milk and high rep breathing squat routine of J.C. Hise by some powerlifting friends because I could not gain weight and get stronger doing what I was doing in the gym. It took nearly 10 years to reach that level of strength.
I met Platz and watched him squat. He went ass to grass and I went parallel or just below. Legal in a competition (which I never entered) but then I was 6' 1.5" and he wasn't.

He was much better built than I. Nice guy too.