Here's a good little article on Phil Johnson and his work as the CMO (Chief Mechanical Officer) at the Colorado Railroad Museum in Golden.
On a side note, I'm glad to see the Denver Leadville & Gunnison engine 191 is finally getting some attention. For years, she's stood as a shadow of what she once was. Will she steam again? I don't know, but with all the steam power coming on line in the last few years and the current projects in the works, anything is indeed possible.