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2. Full-face diving mask - Wikipedia

   en.wikipedia.org/wiki/Full-face_diving_mask

   A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]

3. SEALAB - Wikipedia

   en.wikipedia.org/wiki/SEALAB

   The helium atmosphere conducted heat away from the divers’ bodies so quickly temperatures were raised to 30 °C (86 °F) to ward off chill. [ 2 ] Each team spent 15 days in the habitat, but aquanaut/former astronaut Scott Carpenter remained below for a record 30 days.

4. Surface-supplied diving skills - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving_skills

   The divers' helmets or full-face masks are connected to the umbilical main gas supply hose and communications cable, and that the gas supply and communications system are working correctly. Setting up the stage or bell and its launch and recovery system. Setting up the hot-water supply if applicable. Setting up the decompression chamber if ...

5. Diving mask - Wikipedia

   en.wikipedia.org/wiki/Diving_mask

   A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater. [ 1 ] [ 2 ] Surface supplied divers usually use a full face mask or diving helmet , but in some systems the half mask may be used. [ 2 ]

6. Diving helmet - Wikipedia

   en.wikipedia.org/wiki/Diving_helmet

   These may be worn with a full-face mask or half mask to provide impact protection when diving under an overhead, and may also be used to mount lights and video cameras. [3] [4] An alternative to the diving helmet that allows communication with the surface is the full-face diving mask. These cover most of the diver's face, specifically including ...

7. George F. Bond - Wikipedia

   en.wikipedia.org/wiki/George_F._Bond

   The divers were John C. Bull, Jr., Robert A. Barth, and Sanders W. Manning. [4] They were saturated for 12 days at 198 fsw breathing 3.9% oxygen, 6.5% nitrogen and 89.6% helium. [ 4 ] The temperature and voice communications problems continued with communications with the surface being virtually impossible. [ 4 ]