>A technical problem is that during winter, the temperature of buried devices can drop quickly, creating a possibility that the mechanisms of the mine will cease working due to low temperatures in the winter.[5] Various methods were studied to solve this problem, such as wrapping the bombs in insulating blankets.

One proposal suggested that live chickens would be sealed inside the casing, with a supply of food and water.[6] They would remain alive for approximately a week. Their body heat would apparently have been sufficient to keep the mine's components at a working temperature.