Figure 153.-Bottom man at his place; he keeps miners from stepping on cage until return signal is given and from crowding too near shaft. Shaft bottom is kept clean. Figure 154.-Cage with end chains and handgrips, making hoisting safer for miners. In Europe removable gates on cage and safety gates on landings are required in hoisting men. Miner: Face the shaft bottom station; hold on to handgrips. Figure 155.-Bottom man is away from his place; miner looks up shaft to see whether cage is descending. Figure. 157.-Miner struck by descending cage is knocked into sump and crushed underneath the cage. Bottom man: Don't leave your place. Miner: Don't look up shaft. |