I am modeling in On30 and loosely basing my railroad on the few Narrow Gauge railroads that ran in Kansas the longest of which was the Kansas Central Railway/ Kansas Central Railroad/ Leavenworth Kansas and Western (the railroad after conversion to Standard Gauge.) As I am doing a fictitious railroad running south from a point on the Kansas River between Lawrence and Topeka into Osage County I am modeling a fictitious coal mine as one of its industries. The image I am inserting below is of a real Osage County, Kansas coal mine.
I am thinking of taking the Berkshire Valley small ore bin that I have in O scale and either scratch building or kit bashing a structure similar to this one nested on top of the ore bin. Here is an image of the small ore bin.