Coal - First Seam - Code
C O D E __ O F __ S I G N A L S
That the following shall be the official code of signals
for underground work throughout the region:
Two bells - lower.
Two slow bells - lower very slow.
One bell - stop, if in motion.
Three bells - hoist men, run slow.
Three slow bells - hoist very slow.
Four bells - blasting signal.
This is a caution signal, and the engineer
must acknowledge by raising the
bucket or cage a few feet, then
lowering it again and must accept
no other signal in the meantime.
Nine bells - danger signal.
This signal takes precedence over all
others, except an accepted blast signal.
