I was 10, watched the whole thing from the grandstand. Worst wreck I've ever seen i all my years of attending races. I will never forget the 43 rolling along, creating a line of fire behind him. I had never heard about Tighe losing his sight until I just saw that interview.
This writeup says 12 cars, another in the same program says 14. I believe 16. Ed Delmolino was not in the crash, I don't think Zuidema was either. Everyone in between. And yes, Fuzzy Van Horn was in that race.
How they determined the order of finish of those 16 cars I have no idea.