USE OF TEMPORARY PROP-Continued.

SAFE PRACTICE.

Figure 19.-Timberman sets temporary prop under bad roof before placing permanent timber. He leans tools carefully against rib. Helper stands at one side, out of line with timberman and post, where he will not be struck by the ax if it glances.

Figure 20. Having set temporary prop under loose roof, timberman and helper work in safety while placing crossbar set.

Timberman: Set temporary prop under bad roof before setting permanent timber. Setting a prop does not take long, and may keep you from being killed.

Figure 21.-Miner walks back to fall in his room outby the face. He does not test the roof as he approaches the dangerous place. He may be caught under a second fall.

Figure 22.-After looking at the fall, the miner leaves his place without loading his car, makes no report to the boss, and fails to leave a warning for the snapper or driver.

REPORTING FALLS Continued.

DANGEROUS PRACTICE-Continued.

Figure 23.-Snapper, unwarned because miner failed to report fall, passes under unsafe roof when going into room for car.

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Figure 25.-Miner testing roof as he approaches a fall in his room.

Figure 26. After testing the roof, the miner fences off the room, places a danger sign, and reports the fall to the boss. He is a careful miner.

Figure 27.-Boss has had crossbars set under dangerous roof and room is again safe for work.

Miner: Report roof falls to boss at once and place danger sign.

Figure 28.-Miner going on shift finds his place fenced off and posted with a

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danger" sign.