Related by context. Frequent words. (Click for all words.) 78 leach 64 leached 63 heap leaching 62 heap leach 59 tailings 57 dewatering 57 sulfide 56 leaches 55 leach pad 55 percolation 54 mine tailings 54 oxidation 53 oxide 53 leachate 51 alkali 51 seepage 50 sulphide 50 contaminants 50 testwork 50 Tailings 49 effluent 49 arsenic 49 groundwater 49 saprolite 48 contaminated soils 48 sulphate 48 slurry 48 tailings dam 48 sulfides 48 electrolytic 47 biodegradation 47 nitrate 47 groundwater contamination 47 metallurgical 47 metallurgical testwork 47 contaminated soil 47 sediment 47 aeration 46 brine 46 acidic 46 cyanide 46 acidification 46 manganese 46 zeolite 46 leeching 46 fly ash 46 toxicity 46 zinc 46 harmful chemicals 46 phosphate 46 soils 46 treated effluent 45 chloride 45 gravels 45 sulfate 45 alkaline 45 oxidizing 45 ore 45 smelting 45 oxide mineralization 45 solids 45 sediments 45 electroplating 44 salts 44 adsorption 44 extraction 44 metallurgical testing 44 Nitrate 44 mill throughput 44 chlorination 44 crumb rubber 44 hydrolysis 44 dredged material 44 degradation 44 dolomite 44 gallium 44 zinc mineralization 44 organic solvents 44 compaction 44 sludge 44 biocide 44 effluents 44 Sediment 44 suspended solids 44 silicate 44 contaminated groundwater 44 decanting 44 evaporation 44 alkalinity 43 Arsenic 43 oxidized 43 solidification 43 oxidised 43 sulfuric acid 43 sedimentation 43 ore mined 43 silica 43 pyrolysis 43 contaminant 43 mg l 43 remediation