Natural Scenics Mine Run Coal Coarse ideal f or O & sevenscale gauge modellers, our coarse mine run material is ideally suited to enhancing steam locomotive tenders, open coal and hopper wagons. Medium ideal for OO & HO gauge modellers, our medium mine run material is ideally suited to enhancing steam locomotive tenders, open coal and hopper wagons. Fine suitable for all gauges Also it can give an authentic effect to 'on shed' areas with a coaling stage and/or a coaling tower.