Being told my coal is too close to RR after 55 plus years.

I was contacted in 2013 and told I had a coal lease by inheritance. I appeared at the Mine. Spoke with Mike and we went over a map. Long story short. Now I’m being told Hamilton Coal won’t mine the coal due to it being under a RR track. Now I hear it’s not under but considered too close. I don’t think I’m being told the truth about my 1/4 and 1/10 acre of coal.