30 CFR § 35.8
Conduct of investigations, tests, and demonstrations.
Prior to the issuance of a certificate of approval, necessary Government
personnel, representatives of the applicant, and such other persons as may be
mutually agreed upon, may observe the investigations or tests. MSHA shall
hold as confidential and shall not disclose features of this hydraulic fluid
such as the chemical analysis, specifications, descriptions, and related
material. After issuing a certificate of approval MSHA may conduct such
public demonstrations and tests of the approved hydraulic fluid as it deems
appropriate. The conduct of all investigations, tests, and demonstrations
shall be under the direction and control of MSHA, and any other persons shall
be present only as observers.
[Sched. 30, 24 FR 10201, Dec. 17, 1959, as amended at 39 FR 24005, June 28,