Here is what little that I know at the present time. The line was Rio Grande and ran from Salina, mile post 54 on I-70 to mile post 71 on I 70. It ended at Nioche. There was a mine there, what kind??. There also were 4 tunnels. When that route was the old two lane Utah 10, there was a lot of the old roadbed visiable. This was in the 50's. Will know more when I start looking into the Marysvale Branch.