This is a link to a video of two members of the Norwegian Powerlifting Gym KK67 going all out testing max reps on heavy squats.
To quote Einar Gilberg, who posted the videos:
“Two guys at my powerlifting club trying new personal records. Both suceeds. Kjetil Holm failing to do three reps with 260 kilos and Andreas Tiller barely suceeds in maybe the most spectacular squat rep (the last one) I have ever seen!”