There is a post below about UM being a QB U. Well, ESPN has this article that UM is almost the OL U. The only school above us is Alabama.
The article says:
"If any program was going to threaten Alabama’s claim on the top spot, it was Michigan, which has enjoyed a ridiculous run of success along the offensive line. Four first-round picks (Jeff Backus, Steve Hutchinson, Jake Long and Taylor Lewan) include one (Long) who was the No. 1 overall pick in the NFL draft. Throw in five consensus All-Americans, two national award winners and 21 All-Big Ten selections. The 2000s were truly a great time to be a Michigan offensive lineman."
Here is the link (not sure if it is behind a paywall)