to an oil burner and is operational. No. 481 is operational and is the only remaining active coal burner left on the D&SNG’s roster. No. 482 has been converted to an oil burner and is operational. No. 486 is undergoing an overhaul and conversion to an oil burner. 490 series The 490 series, or "K-37" class "Mikado" type locomotives, were part of a class of thirty standard-gauge class 190 (later, class C-41) 2-8-0 "Consolidation-" type engines built in 1902 for the D&RG by Baldwin Locomotive Works. In 1928 and 1930, ten of the C-41s boilers were used to build the Rio Grande's K-37 class of steam locomotive. At first the D&SNG operated only one K-37: #497, which was rebuilt in 1984 and operated for seven years, being the first K-37 to go to Silverton, and under its own power. It was later determined that the trailing truck was having trouble negotiating the curves in the Animas Canyon. For this reason, the D&SNG traded #497 to the C&TSRR in exchange for K-36 class #482. This trade was mutually beneficial for both railroads as it gave the C&TSRR a fully operational locomotive, giving in exchange a locomotive that had never run and likely would never operate under C&TSRR ownership. Numbers 493 and 498 are owned by the D&SNG, but #498 is not operational and serving as a parts source. Number 499 was also owned by the D&SNG at one time, lacking a tender and was on display in the museum. #499 was later traded for K-36 class No. 486 at Royal Gorge Park, including the tender from #498. No. 493 was shifted around a few times on the railroad on display a few times, last ending up in the Silverton yard until May 4, 2016, when #493 was hauled to Durango from Silverton by K-36 #481. #493 to be transported to the Colorado Railroad Museum in Golden, Colorado on a 10-year lease, where it would be restored to operational condition and run it for those 10 years; then returned to the D&SNG. However, plans were cancelled and #493 sat outside the Durango roundhouse with an uncertain future for some time until early 2018, when she was put in the roundhouse for restoration. In response to the 416 fire, the D&SNG announced their plans to restore #493 publicly and that the locomotive was their first candidate for an oil conversion, with more to