30 C.F.R. § 57.7807
Current through November 30, 2024
The combustion chamber of a jet drill stem which has been sitting unoperated in a drill hole shall be flushed with a suitable solvent after the stem is pulled up.
30 C.F.R. §57.7807
The combustion chamber of a jet drill stem which has been sitting unoperated in a drill hole shall be flushed with a suitable solvent after the stem is pulled up.
30 C.F.R. §57.7807