---
kind: "section"
citation: "30 C.F.R. § 7.61"
title: "30"
number: "7.61"
heading: "Purpose and effective date."
url: "https://uscodex.org/cfr/30/7.61"
---

# §7.61. Purpose and effective date.


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

### 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.