StacksVerified U.S. regulatory reference

30 CFR §56.6310

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When a misfire is suspected, persons shall not enter the blast area—
  1. (a)For 30 minutes if safety fuse and blasting caps are used;
  2. (b)For 15 minutes if any other type detonators are used; or
  3. (c)For 30 minutes if electronic detonators are used, or for the manufacturer-recommended time, whichever is longer.