Immersion heater
The greenish discolouration of the metal indicates a high copper content. Copper was used because it is very good electrical conductor. Immersion heaters were presumably used in the medical section of the camp to heat water.
The greenish discolouration of the metal indicates a high copper content. Copper was used because it is very good electrical conductor. Immersion heaters were presumably used in the medical section of the camp to heat water.