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The boys' coach, Ekkapol Chantawong, was writing to parents in group, promising to take care of them as best as he could. The parents had written to him earlier, assuring him that they were not blaming him for the situation.
"Thank you all for your support," wrote the coach. "I apologize deeply to the parents."
He also wrote to his own family members – an aunt and his grandmother – asking them not to worry too much about him. "Auntie, can you tell my grandmother to make vegetable juice and pork snacks?" He writes. "I'm going to eat them when I go out, I love you all."
– Muktita Suhartono, at Tham Luang Cave
Why a 15% oxygen level worries rescuers
Friday, a commander of the Thai Navy SEAL said that the level of oxygen in boys The cave was about 15% and fell. This is a concern because levels below 16% can cause oxygen depletion, a condition known as hypoxia.
Under normal conditions, people breathe about 21% oxygen, 78% nitrogen, and 1% argon. gas, including carbon dioxide. When the mix changes, humans can experience a range of health effects, subtle and other.
The US Federal Aviation Administration reports that hypoxia can cause headaches, nausea, drowsiness, rapid breathing, difficulty speaking. other problems. It can also result in disability or, in extreme cases, death.
Hypoxia may be of concern in high altitude areas, or when an airplane loses atmospheric pressure.
The air in the caves tends to be good. Dinko Novosel, president of the European Cave Rescue Association, said that the concentration of oxygen in Tham Luang cave was 15% or less. network would be "really problematic" for anyone trapped inside. It would allow them to survive, but would make even basic activities difficult, he said.
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