This is a very nice write up of the whole operation, though from a US POV:
Inside the treacherous rescue of boys trapped in cave
Thanks for the link. Another good article to read.
Some new facts come out from this article:
1. There were some speculation to what was the cause of the death of Saman Gunan. Some stated that he ran out of air. Some stated that he passed out due to lack of oxygen, which was the case in some of the chamber having oxygen level down to 15%. This link stated that his tank ran empty. "The divers finally emerged seven hours later, carrying a lifeless body: Saman's own tank had run out."
2. U.S. Air Force Maj. Charles Hodges, who led the American team and was so new to his new posting that his belongings had not arrived in Okinawa, Japan, was able to convince the Thai officials to start the rescue in small window of time with the rescue plan he laid out that we all later learned in the end. "You can wait until that finite window of time is over," Hodges said he told Thai officials, "and I can almost guarantee you that all of them will die."
"The Thai interior minister requested that Hodges and about eight others go into a private room. He wanted to hear their plan again. Hodges explained the mission's two parts, emphasizing it would take an entire day of preparation before the first boy would be pulled through the water. The Thais would continue to search for a drilling site if the diving plan failed.
They got their green light.
On July 7 - two weeks to the day since the boys went missing - the rescue plan, while not publicly acknowledged, was underway.
Air tanks were stashed along the muddy passageways, enough for the 12 boys, their coach, the four SEALs who had embedded with them, and the 18 divers who would carry them out. Riggers strung a web of static ropes for hoisting the cocoon-like stretchers over vast fields of jagged rocks."
3. Why they used 80% oxygen tank for the boys to breathe. "They readied the mask, attached to a tank filled with 80 percent oxygen. The rich mixture would saturate his tissues, making him easier to revive if he stopped breathing."
4. "Finally, the boy was swaddled in a flexible plastic stretcher - akin to a tortilla wrap, Hodges said - to confine his limbs and protect him from the cheese-grater walls. And then, with his teammates watching, they pulled him under the murky water."