sentences:  The steam locomotives and rolling stock used on the line were acquired second-hand from the Florence and Cripple Creek Railroad in Colorado, which had recently been abandoned.The vast majority of the Montana Southern's freight and passenger traffic came from the Coolidge mining region, and as the mines there declined in the 1920s, the railroad followed suit.The railroad entered receivership in 1923 and was reorganized twice, first as the "Montana Southern Railroad" and later as the "Montana Southwestern Railway."