Undermined Coal Mine Property Development Poential

[William Jenkins]

I've got a property that I am interested in that was undermined with a room and pillar coal mine back in the 1920's.  There is an existing income stream that I am interested in purchasing that goes with the property, and I am just starting to look into what I can do with the remainder of the property. 

I'm well versed in land development but don't have any experience with undermined property.  The property is located along a major interstate on an exit ramp albeit in a more rural area.  I could easily see a future opportunity for a gas station, self storage, smaller commercial warehouse, etc., but I know the undermining will affect the attractiveness of selling later down the road for that.  The state offers subsidence insurance (even for new development), but it is capped at $500k (could cover a smaller metal warehouse building etc, but not a gas station, hotel, etc.) 

Anyone on here ever develop an undermined property?  What did you develop?  Tips, problems, issues, concerns, advice?