30 CFR § 47.82
Disclosure of information to MSHA.
(a) Even if the operator has a trade secret claim, the operator
must disclose to MSHA, upon request, any information which this subpart
requires the operator to make available.
(b) The operator must make a trade secret claim, no later than at
the time the information is provided to MSHA, so that MSHA can
determine the trade secret status and implement the necessary