The last message, Argonaut mine

The last message: Left by 47 entombed miners in Argonaut Gold Mine, Jackson, Calif. Written with carbide lamps on the face of the 4350 foot drift. A (rescue) miner looking at a message on a wall reading, "3 o'clock, gas getting strong"

Shortly before midnight on August 27, 1922 a fire broke out, trapping the miners. It took 2.5 days to put out the fire. And it took until September 18th to find the bodies of the (deceased) trapped miners. This was the message they left.