Ok I have spent 2 hours looking for the study and from what I gather the existense of it is shaky at best.
Here is a basic link of what I have found:
Basically the first couple posts are all that matters the rest starts to get out there.
But the person who wrote the one blurb that is always quoted says he got his info on siffs message board from someone he thought might be yessis.
Yessis nor Siff ever actually gave him the results and no one is sure if the study even exists.
So there is the olympic lifter is faster than the sprinter that you see everywhere.
Here is another study which is germane to this topic (as well as the box squat thread) which also cites several other studies that are on point. This study gives a good review focusing on the relationships between Maximum Power and Explosive Power, as measured by a variety of 1RM to 3RM lifts, to athletic performance, including the ability to jump high and run fast. Interestingly, the two variables that correlate best with sprint speed in the 40yd dash are 3RMsquat/bodyweight and 3RMhangclean/bodyweight. If you look at the data, an r=70% converts to about an r^2 of 50%, which suggests that about half of the variance in 40yd. times can be explained by the differences in strength as measured by the squat/bw or hangclean/bw. That's a pretty strong suggestion that improving strength in one or both of these lifts should result in improved performance in the 40yd., and by extension, other short sprints as well.