---
kind: "section"
citation: "30 C.F.R. § 57.6160"
title: "30"
number: "57.6160"
heading: "Main facilities."
url: "https://uscodex.org/cfr/30/57.6160"
---

# §57.6160. Main facilities.

- (a) Main facilities used to store explosive material underground shall be located—
  - (1) In stable or supported ground;
  - (2) So that a fire or explosion in the storage facilities will not prevent escape from the mine, or cause detonation of the contents of another storage facility;
  - (3) Out of the line of blasts, and protected from vehicular traffic, except that accessing the facility;
  - (4) At least 200 feet from work places or shafts;
  - (5) At least 50 feet from electric substations;
  - (6) A safe distance from trolley wires; and
  - (7) **At least 25 feet from detonator storage facilities.**
- (b) Main facilities used to store explosive material underground shall be—
  - (1) Posted with warning signs that indicate the contents and are visible from any approach;
  - (2) Used exclusively for the storage of explosive material and necessary equipment associated with explosive material storage and delivery:
    - (i) Portions of the facility used for the storage of explosives shall only contain nonsparking material or equipment.
    - (ii) The blasting agent portion of the facility may be used for the storage of other necessary equipment;
  - (3) Kept clean, suitably dry, and orderly;
  - (4) Provided with unobstructed ventilation openings;
  - (5) Kept securely locked unless all access to the mine is either locked or attended; and
  - (6) Unlighted or lighted only with devices that do not create a fire or explosion hazard and which are specifically designed for use in magazines.
- (c) Electrical switches and outlets shall be located outside the facility.

## Notes

### Source

Source: 61 FR 36801, July 12, 1996, unless otherwise noted.

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.