Survival in the mineshaft

I read up on this and got some really interesting information on how they survived. The miners had 2 km of space/tunnels to move around and a 540 square foot shelter. For water, they located underground water sources and used water from the radiators of machines and vehicles in the mine. For food, they had to ration their emergency supplies. Every 48 hours, they had 2 small spoonfuls of tuna, a sip of milk, a biscuit, and a piece of peach. They each lost an average of 18lbs each. Also, for light, they used truck batteries to power their hard hat lamps.