30 CFR § 27.3
By appointment, applicants or their representatives may visit the
U.S. Department of Labor, Mine Safety and Health Administration,
Approval and Certification Center, 765 Technology Drive, Triadelphia,
WV 26059, to discuss with qualified MSHA personnel proposed methane-
monitoring systems to be submitted in accordance with the regulations
of this part. No charge is made for such consultation and no written report thereof will be
made to the applicant.