South Wales, England, Swansea Coal Mine.
In the shaft more than 170 meters underground, Old David was desperately pounding the air door ahead in the tunnel with all fours, shouting, "Jamie! Open the door, Jamie!"
The air door in the mine was used to prevent excessive accumulation of methane and carbon dioxide. There would always be a child waiting behind the door to open and close it for the coal pushers.
However, there was no response on the other side of the door.
In the pitch-black corridor, Old David turned back to encourage his fellow workers behind him: "It's alright, the boy's just asleep."
He was completely unaware that the few of them had already fallen into a hopeless situation.
Jamie's family hadn't eaten sugar bun or drank sweetened tea for a whole week. Without enough sugar intake, he was simply unable to endure the grueling seventeen-hour workdays.
Half an hour ago, he had already fainted.
