A model of a nickel mine as well as a model of an associated railway to that mine was built in HO scale by Mario Alberto Scarati from Italy. His layout was presented on a model railway exhibition for US Model Railroads in Germany. On the left there is a charging station with railway line, and on the right a train system for discharging.
Actually, there are more than 250 videos about model railroading and railway modelling, for example, on Dailymotion and YouTube. Please, visit also Pilentum's Facebook site.