- Photos - add photos of industrial railways in several incarnations (narrow gauge, standard gauge, diesel, electric, etc)
- Further expand the discussion of their use in hazardous locations, e.g. mining
- Discuss motive power options that have been used, e.g. diesel, smokeless, electric, animal (like horse or mule)
- Discuss what happens to the railraods and their equipment when they are no longer needed; for example, the Chicago tunnel railways described in Forty feet below: The story of Chicago's freight tunnels.
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