Re: C&S rail weight question

It was quite a variety. According to trackage charts dated January 5, 1929:

Denver to Como trackage chart:
A fair amount of 45 pound rail, a lot of 52 and 56 pound, some 60 pound, with 80 pound in central Denver (probably on the dual gauge), and other sizes in between.

Como to Leadville chart:
Similar variety, but mostly 52 pound, smallest is 40 pound.

This was all mainline trackage, with some stretches of older lighter rail where it had not been replaced in the middle of areas of newer heavier rail. The charts show main line rail size and year installed at each location along the line, along with locaton, and curve information.