Related by context. Frequent words. (Click for all words.) 68 mine shaft 58 coal mine 57 coalmine 55 mine 53 shaft 52 mine shafts 50 miners 49 cavern 48 colliery 48 Mine 47 miner 47 cave 46 trapped miners 46 elevator shaft 45 trench 45 manhole 45 underground 44 mines 44 shafts 43 coal miners 43 coal mines 43 ledge 42 crevasse 41 trapped underground 41 underground workings 41 pit 41 cliff 41 mine workings 41 mining 41 coal mining 40 crevice 40 #ft [003] 40 ravine 40 Colliery 40 Coal Mine 40 quarry 40 Sago Mine 39 tunnel 39 miners trapped 39 drainage pipe 39 orebody 39 chimney 39 tunnels 39 dungeon 39 Crandall Canyon 39 coal seam 38 caves 38 rabbit hole 38 Crandall Canyon Mine 38 depths 37 mineworkers 37 Crandall Canyon mine 37 mountainside 37 digger 37 stairwell 37 rescuers 36 coal seams 36 Sago 36 winched 36 Mining 36 ore 36 subterranean 36 creek bed 36 digging 36 staircase 36 MSHA 36 coal miner 36 weir 35 pits 35 septic tank 35 trapdoor 35 waterfall 35 entombed 35 trapped 35 manholes 35 excavator 35 caverns 34 cave ins 34 abseiling 34 abyss 34 sarcophagus 34 orchestra pit 34 boulder 34 manhole cover 34 longwall 34 rockfall 34 Gold Mine 34 tunneling 34 Mine Safety 34 burrow 34 drainage ditch 34 borehole 34 mountain 34 goldmine 34 confined spaces 34 uranium mines 34 stairway 34 mined 33 riverbank 33 vat 33 silo