Mine underground channels that carry finished production is often abandoned or removed by. So researchers have taken the concept to the compressed air down to mine and in the storage compartment to release the electrical NET.
The underground mining operation producing finished often stay or leave without leverage. The researchers got the idea to put compressed air into the storage compartment in the mine and released to manufacturing an electric.
The underground mines operated finished production is often stay or was left without using benefit. The idea is to bring the compressed air into the reservoir in the channel, mines and released to produce กระไฟฟ้า.