Yes. Equipment intended for use in underground coal mines must receive MSHA approval under 30 CFR Part 18 or related standards before it can be placed in service. Importers and mine operators should initiate the MSHA approval process well in advance of the planned deployment date, as testing and certification can take considerable time and may require design modifications to meet US safety standards.

Drilling and boring machinery used to sink shafts or extract ore in situ is classified under a different Chapter 84 heading than crushing, grinding, or screening machinery used to process extracted ore. The functional distinction — extraction versus processing — is the classification pivot, and equipment that performs both functions may require a primary-function analysis or a CBP ruling to confirm the correct heading.