... WATER RESOURCES AND ITS REMEDIATION IN PRACTICE PAUL L. YOUNGERPollution by mine drainage is a major problem in many parts of the world. The most frequent contaminants are Fe, Mn, Al and SO4, ... Zn, Cu, As, Ni, Cd and Pb. Remedial options for such polluted drainage include monitored natural attenuation, physical intervention to minimise pollutant release, and active and passive water ... of geoscientific, hydroecological and socio-economic specialists. Hydrogeochemical Engineering Research and Outreach (HERO), School of Civil Engineering and Geosciences, University of Newcastle,...