StacksVerified U.S. regulatory reference

30 CFR §56.6602

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When explosive material is loaded pneumatically into a blasthole in a manner that generates a static electricity hazard—
  1. (a)An evaluation of the potential static electricity hazard shall be made and any hazard shall be eliminated before loading begins;
  2. (b)The loading hose shall be of a semiconductive type, have a total of not more than 2 megohms of resistance over its entire length and not less than 1000 ohms of resistance per foot;
  3. (c)Wire-countered hoses shall not be used;
  4. (d)Conductive parts of the loading equipment shall be bonded and grounded and grounds shall not be made to other potential sources of extraneous electricity; and
  5. (e)Plastic tubes shall not be used as hole liners if the hole contains an electric detonator.