Related by context. Frequent words. (Click for all words.) 63 shaft 62 mine shafts 59 mine 57 trapped miners 56 coal mine 52 miners 52 miners trapped 50 cave 50 miner 49 Mine 49 crevasse 49 coalmine 49 trapped underground 49 underground workings 49 Crandall Canyon Mine 49 elevator shaft 48 mines 48 cavern 48 Crandall Canyon mine 47 creek bed 47 ravine 47 colliery 47 mine workings 46 coal seam 46 shafts 46 canyon 45 manhole 45 adit 45 orebody 45 underground 44 longwall 44 trench 44 rescuers 44 cavers 44 mountainside 44 coal mines 43 HUNTINGTON Utah 43 rockfall 43 borehole 43 Sago Mine 43 coal miners 42 crevice 42 coal seams 42 Mine Safety 41 steep embankment 41 tunnel 40 drainage pipe 40 tunnels 40 Gold Mine 40 caves 40 creek 40 Coal Mine 40 rockslide 40 Rescuers 39 Crandall Canyon 39 mining 39 crater 39 capsule 39 stairwell 39 Cigar Lake 39 quarry 39 mountain 38 Martian surface 38 sinkhole 38 ledge 38 coal mining 38 Whittall 38 tailings pond 38 cliff 38 riverbed 38 underground tunnels 38 mined 38 MSHA 38 gorge 37 roadbed 37 W.Va. mine 37 flume 37 slopes 37 excavator 37 caldera 37 Hecla 37 winched 37 coalfield 37 climbers 37 ore 36 Perilya 36 Harmony Gold 36 coal miner 36 wellbore 36 entombed 36 weir 36 Chilean miners 36 Rio Blanco 36 mineralized zone 36 boulder 36 pit 36 outcropping 36 trapped 36 ore grades 36 chute 36 leach pad