Related by context. Frequent words. (Click for all words.) 73 boreholes 49 tubewell 49 pit latrines 49 drill rig 48 borewells 48 wells 48 borewell 47 pit latrine 46 tubewells 45 stope 45 submersible pump 45 downhole 45 wellbore 45 shaft 45 submersible pumps 45 dewater 44 wireline logs 43 vertical shaft 43 reservoir 43 auger drilling 43 mine shaft 42 drilling rig 42 drill cuttings 42 stopes 42 trapped miners 42 ventilation shafts 42 Isiolo 41 Drilling 41 coring 41 artisanal miners 41 underground workings 41 Ruwa 41 Bibiani 41 drilling 41 drill holes 41 adit 41 tailings dam 40 workover rig 40 ventilation shaft 40 kimberlite pipe 40 Amref 40 drillhole 40 artesian 40 subsurface 40 coal seam 40 Prestea 40 Owo 40 bulk sampling 39 mine workings 39 latrine 39 NamWater 39 Kavango 39 holes drilled 39 mineralized interval 39 drilled vertically 39 CKGR 39 drilled 39 Mzimba 39 standpipes 38 Katakwi 38 artisanal mining 38 geological interpretation 38 kimberlite 38 orebodies 38 drill 38 Kedikilwe 38 #W# [006] 38 Adenta 38 latrines 38 Kitui 38 Basarwa 38 trenched 38 Driefontein 38 aquifer 38 Weija 38 peridotite 38 Nkwanta 38 drill rigs 38 RC drill 38 trapped Chilean miners 38 Mufulira 38 seafloor 38 watercourse 38 Mwingi 38 potable water 38 Migori 38 FOGL 38 Hadow 38 Copperbelt 38 Orapa 37 Singida 37 coal seams 37 Birim 37 Karonga 37 stoping 37 geotechnical drilling 37 Nkate 37 Obuasi 37 Port Loko 37 dewatered 37 Rakai