§7.61. Purpose and effective date.
30 C.F.R. § 7.61
This subpart establishes the specific requirements for MSHA approval of multiple-shot blasting units. It is effective January 22, 1990. Applications for approval or extensions of approval submitted after January 22, 1991 shall meet the requirements of this subpart.
Notes, amendments, and revision history
Source
Source: 54 FR 48210, Nov. 21, 1989, unless otherwise noted.
Authority
Authority: 30 U.S.C. 957.
Source
Source: 53 FR 23500, June 22, 1988, unless otherwise noted.