Abandoned or adjacent mine; bore holes; dangerous
accumulations of water and gas
Sec. 3. Whenever any working place in an underground mine
approaches within 50 feet of abandoned workings in such mine as
shown by surveys made and certified by a competent engineer or
surveyor, or within 200 feet of any other abandoned workings of
such mine, which cannot be inspected and which may contain
dangerous accumulations of water or gas, or within 200 feet of any
workings of an adjacent mine, a borehole or boreholes shall be
drilled to a distance of at least 20 feet in advance of the face of such
working place. Such boreholes shall be drilled sufficiently close to
each other to insure that the advancing face will not accidentally hole
through into such workings. Boreholes shall also be drilled not more
than 8 feet apart in the rib of such working place to a distance of at
least 20 feet and at an angle of 45 degrees. Such rib holes shall be
drilled in one or both ribs of such working place as may be necessary
for adequate protection of persons working in such place.
(Formerly: Acts 1955, c.168, s.86.)
Last modified: May 27, 2006