1.   Bell County Justice of the Peace Eddy Lange, who has coordinated the investigations into the deaths, said he interviewed the technician who installed the temporary oxygen hose.

2.   Oxygen generators are designed to produce oxygen when a passenger tugs on the oxygen hose that drops down after an airplane loses cabin pressure.

3.   Rescuers also sent an oxygen hose to the bottom of the hole.

4.   There was cause for cheer when one of his Sherpa guides returned with a spare oxygen tank hose he found at a neighbouring campsite.