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| | 1998 Mount Everest Expedition Cybercast (Site not responding. Last check: 2007-10-10) |
 | | The mask is pretty heavy; it's fairly thick rubber, and where it lies against your face, it's lined with a chamois leather to make it more comfortable. |
 | | Your oxygen cylinder, which weighs five to seven pounds, is continuously filling the bladder so when you breath out, the valve of the bladder closes, and you breath out through the big snout. |
 | | I don't want to make it sound like it's some chamber of horrors, but just to relate to you that the oxygen mask, it's an unusual situation to be in, it lasts about 12 hours, and you're fairly glad at the end of it to be able to put it away. |
| classic.mountainzone.com /everest/98/climb5-21oxygen.html (1103 words) |
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