---
kind: "section"
citation: "30 C.F.R. § 56.6310"
title: "30"
number: "56.6310"
heading: "Misfire waiting period."
url: "https://uscodex.org/cfr/30/56.6310"
---

# §56.6310. Misfire waiting period.


When a misfire is suspected, persons shall not enter the blast area—

- (a) For 30 minutes if safety fuse and blasting caps are used;
- (b) For 15 minutes if any other type detonators are used; or
- (c) For 30 minutes if electronic detonators are used, or for the manufacturer-recommended time, whichever is longer.

## Notes

### Amendments

[61 FR 36795, July 12, 1996, as amended at 85 FR 2027, Jan. 14, 2020]

### Source

Source: 61 FR 36795, July 12, 1996, unless otherwise noted.

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 50 FR 4054, Jan. 29, 1985, unless otherwise noted.

### Amendments

[61 FR 36795, July 12, 1996, as amended at 85 FR 2027, Jan. 14, 2020]