Do Sherpas use oxygen on Everest?

Related questions

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2. Who climbed Mount Everest recently?
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4. Is Aconcagua dangerous?
5. How did Namgyal Sherpa die?
6. What is the death zone on Mount Everest?
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Tags

1. #oxygen
2. #altitude
3. #order
4. #expeditions
5. #stronger
6. #carry
7. #perform
8. #consequently
9. #himalayas
10. #alpine
11. #above
12. #sherpas
13. #require
14. #suited
15. #summit
16. #their
17. #safety
18. #style
19. #since