Related by context. Frequent words. (Click for all words.) 48 oxygen 45 trapped miners 43 methane gas 43 poisonous gases 42 drinkable water 42 oxygen tanks 41 methane 41 ventilation 38 underground 38 toxic gases 37 Crandall Canyon Mine 37 Richard Stickler 37 carbon monoxide 37 miners 37 oxygen cylinders 37 Randal McCloy Jr. 36 borehole 36 organic compounds 36 radioactive material 36 Crandall Canyon mine 36 coal slurry 35 Kevin Stricklin 35 Peter Whittall 35 Martian surface 35 Crandall Canyon 35 rafts 35 radioactive substances 35 water vapor 35 underground tunnels 34 Mine Safety 34 Brant Webb 34 radioactivity 34 Sago Mine 34 Minister Jaime Manalich 34 miners trapped 34 boreholes 34 liquid oxygen 34 Sago mine 34 trapped underground 34 Atacama desert 34 sustenance 33 MSHA 33 gases 33 helium 33 supplemental oxygen 33 ventilated 33 subterranean 33 tritium 33 liquid hydrogen 33 radioactive isotope 33 McCloy 33 mine shaft 33 capsule 33 oxidizer 33 breathing apparatus 33 rescuers 32 tunnels 32 compressed air 32 mine shafts 32 oxygen cylinder 32 acetylene 32 respirators 32 radioactive materials 32 HUNTINGTON Utah 32 poorly ventilated 32 radioactive 32 oxygen masks 32 fecal coliform bacteria 32 seawater 32 Kerry Allred 31 Manalich 31 carbon dioxide 31 lifejackets 31 underground bunkers 31 earth crust 31 stopes 31 underground aquifers 31 Smoke detectors 31 cavern 31 coal seams 31 ventilation shaft 31 escape hatch 31 oxygenated 31 Copiapo Chile 31 water 31 coal seam 30 explosives 30 ventilate 30 hydrothermal 30 saline solution 30 toxic fumes 30 Carbon dioxide 30 Oxygen 30 stairwells 30 Ventilation 30 cyanide 30 carbon monoxide fumes 30 Montcoal 30 magma 30 bacteria 30 mine