text: I have found more information, https://dec.ny.gov/sites/default/files/mapwurtsbororidgesf.pdf
  
  The Mine Trail appears to connect the upper and lower railroad trails according to this official map. I hiked from the north on the upper rail trail and got to the gate were the east side of the mine trail connects, then turned back, but it seems like the connection to the west is ever so slightly more south than I hiked.
  
  On the lower rail trail/ canal trail my memory is more hazy. The path might have been blocked off, as like I said the area is contaminated. However, I will go hiking again there sometime and check these paths out again to confirm.