Question: Mile Posts
... The "Report of the Survey of the Central and Union Pacific Railways," published in 1877, indicates that three line relocations had already been done by 1876. Within the next thirty years, another 300 mile of right-of-way had been relocated in various grade revision projects.
Did the CP/SP ever "re-Mile Post" its railroad? Or did it just live with the problem of long miles, short miles, and missing Mile Posts? And if there were revisions, what was the date of the last such program of revisions?