M.P. 40.27

The Gold Collar Mine was located on the north side of Prosser Gulch about 100 yards above the Gilpin main line.

One of the questions about the Gold Collar was how the Gilpin serviced it.   In Gilpin Railroad Station Listing by Dan Abbott, Mr. Abbot says:

M.P. 40.27
Gold Collar Mine Spur
     The Gold Collar Mine was located on the north side of Prosser Gulch just above its junction with Eureka Gulch.   This 180-foot spur for the Gold Collar mining and Milling Company was completed and ready for use on March 26, 1910.  The entire cost of this spur - $289 - was borne by the Gilpin Railroad Company and hte track was the property of the railroad company.   This spur was build to provide a loading point for the Gold Collar Mine and to better facilitate handling ore for the Castro Mill.  Construction began March 23, 1910 and was completed three days later.

However, if one goes out to the track roadbed of the Grand Army and keeps walking out past the Grand Army into Prosser Gulch, one find a roadbed that extends all the way to the Gold Collar.   The screen shot below shows the trackage based on this roadbed.

The question is, when did this trackage exist and for how long?