The following interesting and colourful account of railroading on the “Soixante” was written up by Travelling Engineer Van T. Sherman in “An historical & technical biography of the Twenty-first engineers, light railway.” published in 1919. It’s a great read!
… It was before the St. Mihiel offensive. The "Slim Gauge" line from the railhead at Sorcy Gare climbed steadily its twisting way to Cornieville, eight kilometers away, and it was a battle for steam all the way, as from twelve to fourteen cars of rations and forage was quite a load for such a small engine. It was necessary for the engineer to stand up, manage the sand lever with one hand and unbalance the throttle with the other and the "Johnson bar" the best way that he could.