With further checking, I found that the Black Hills has some of the best Apatite crystals to be found anywhere. Haven't found anything about large deposits of gem stone or Apatite ore so far. Now that I know Apatite is real, I would like to have my layout reflect a actual Apatite mine.
So, I will keep checking on Apatite in the Black Hills.
All but 6" of the upper level trackwork is finished. After the hoist is installed and working well, the last 6" of track will be finished. Track on the far side of the host can be finished then also. The gap in the roadbed is where the incline hoist will be installed. LG