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30 CFR Part 56Public Domain

§ 56.6310 — Misfire waiting period

Subpart E — Explosives

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.

Public Domain: 30 CFR Part 56 (MSHA Safety and Health Standards — Surface Metal and Nonmetal Mines) is a U.S. government publication and is not subject to copyright. Text extracted from the official source ↗. Figures are served from the eCFR; if one does not load, use the link in its place.
MSHA Part 56 56.6310 — Misfire waiting period | BuildSpec