['Specialized Industries']
['Mining']
05/18/2022
...
(a) Each operator of a mine shall maintain a copy of each investigation report required to be prepared under §50.11 at the mine office closest to the mine for five years after the concurrence.
(b) Each operator shall maintain a copy of each report submitted under §50.20 or §50.30 at the mine office closest to the mine for five years after submission. Upon request by the Mine Safety and Health Administration, an operator shall make a copy of any report submitted under §50.20 or §50.30 available to MSHA for inspection or copying.
['Specialized Industries']
['Mining']
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