From the CRRM site for the book on it: The rail system was a 42-inch catenary-style railroad. Motive power was supplied by 32 Swedish-built ASEA electric locomotives; each locomotive rode on two axles, weighed 55 tons, and was dual voltage 1400 and 600 DC volts. The lower voltage was for safety purposes in close clearance portions of the mine. The rail line moves ore 14 miles from the mine to the mill, using 250 twenty-ton ore cars, including a 9.8-mile tunnel under the Continental Divide that was longer than either the Cascade or Moffat tunnels. The railroad ceased operation on July 30, 1999. This railroad was replaced by a conveyor belt system.
And knowing Henderson and the tax situation with the County, I would guess all of it is long gone and scrapped.