Baechler, FredADI Nolan Davis2018-03-122018-03-121997-02-25https://laurentian.scholaris.ca/handle/10219/2923enacid drainagePERD pilesphosphatelimestonehardpan zonesLaboratory and field investigations examining the inhibition of acid generation from pyritic materials : perd coal waste rock piles field observations and reportTechnical Report