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When the mine accident happened, the rescue workers need to support the rescue tunnel. When the second accident happened, the traditional wood- support system will malfunction. My design, can afford an efficient support in a very short time. The air jack will be opened immediately to support the rescue tunnel. Even though the accident happened again, the rescue workers will still be safe in the tunnel because the air jack can protect them from the collapse of the tunnel. Meanwhile, when the gas becomes too dense, gas detector will warn the rescue workers of the danger. In this way, it offers a safe environment for the rescue.