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# Title
 1  2001 - 05/03/2001 - Application of 1926.800 to lone employees working underground in a tunnel or shaft connected to a tunnel.
 2  1977 - 11/16/1977 - Positive identification of persons working underground in tunnels and shafts, caissons, cofferdams, compressed air tunnels.
 3  1976 - 04/19/1976 - Use of Mapp gas, oxygen, and acetylene in a tunnel.

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