Related by context. Frequent words. (Click for all words.) 64 oxygen cylinder 53 oxygen tanks 49 ventilators 48 LPG cylinders 46 fire extinguishers 46 breathing apparatus 45 oxygen tank 44 extinguishers 44 oxygen masks 43 canisters 43 cargo compartment 42 wearing breathing apparatus 42 heaters 42 oxygen 42 lithium batteries 41 batteries 41 LPG cylinder 41 supplemental oxygen 41 inhalers 40 lifejackets 39 diesel generators 39 anesthetists 39 jerry cans 39 fire extinguisher 39 propane tanks 38 kerosene heaters 38 gas canisters 38 ambulances 38 rucksacks 37 generators 37 cots 37 diesel generator 37 compartments 37 valves 37 lavatory 37 breathable air 37 pressurization 37 Smoke detectors 37 fridges 37 smoke detectors 37 ventilation 37 reactor cores 37 bladders 36 syringes 36 gas canister 36 respirators 36 propellants 36 liquid oxygen 36 crates 36 air compressors 36 water purifier 36 space heaters 36 compressed air 36 heater 36 stoves 36 canister 36 Air Accidents Investigation 36 containers 36 propane tank 36 tents blankets 35 poorly ventilated 35 extinguisher 35 ventilating 35 rafts 35 compressors 35 tubes 35 cupboards 35 Batteries 35 Smoke alarms 35 X ray machines 35 flues 35 explosives 35 IV fluids 35 bottles 35 kerosene heater 35 detonators 35 cooking utensils 35 transformers 34 smoke alarms 34 compartment 34 Refrigerators 34 cot 34 helicopters 34 portable heaters 34 coolant 34 trolleys 34 stove 34 water heater 34 lifeboats 34 defibrillator 34 lavatories 34 sleeping bags 34 coolers 34 unexploded bombs 34 blankets 34 rucksack 34 electrical outlet 34 refrigeration 34 propane heater 34 boilers 34 surgical instruments