Very cool info flytyer,
I fished on 2 others this year that are benefiting from this type of activity. Pine creek in north central PA has active liming stations and is doing very well. And Kettle creek, also in north central PA.
Kettle is a bit different then the rest because they are using a new passive method of liming the creek. They have created settling ponds where the acid mine drainage is concentrated. The ponds are lined with limestone. I understand that they have learned a great deal since they put them in and there are some improvements to the system they are making, but the results have been amazing. Kettle is now loaded with wild brook trout. I went down in the late spring and caught dozens of them. Love wild brook trout!