30 CFR Part 57Public Domain
§ 57.6604 — Precautions during storms
Subpart E — Explosives
During the approach and progress of an electrical storm—
(a)Surface blasting operations shall be suspended and persons withdrawn from the blast area or to a safe location; or
(b)Underground electronic or electrical blasting operations that are capable of being initiated by lightning shall be suspended and all persons withdrawn from the blast area or to a safe location.
Public Domain: 30 CFR Part 57 (MSHA Safety and Health Standards — Underground 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.