Acid mine drainage where the ore is a sulfide mineral or is associated with pyrite. In these cases the predominant metal ion may not be iron but rather zinc, copper, or nickel. The most commonly mined ore of copper, chalcopyrite, is itself a copper-iron-sulfide and occurs with a range of other sulfides. Thus, copper mines are often major culprits of acid mine drainage. At some mines, acidic drainage is detected within 2–5 years after mining begins, whereas at other mines, it is not detected for several decades. In addition, acidic drainage may be generated for decades or centuries after it is first detected.
Ore railway station station has been unstaffed since a booking office fire in the late 1980s, and it has no other facilities. There is limited road access via Ore Valley Road (off Hughenden Road), but this station is not recommended for people with physical disabilities. The area has in the past been a hotspot for vandalism but is now covered comprehensively by CCTV. It is scheduled for a major re-development. There has been some debate as to whether the station should be renamed Hastings East or Ore Valley. Trains terminating and restarting at this station run forward into a turnaround siding which runs