32.9. Underground lighting
32.9.1.
All places where workers have to work or pass should
be adequately lit.
32.9.2.
In addition to the main lighting, there should be emer-
gency lighting that functions long enough to enable the workers to
reach the surface safely.
32.9.3.
All hoisting, pumping and other machinery should
be
sufficiently
lit
to
enable moving parts
to
be readily
distinguished