30 CFR § 15.3 - Observers at tests and evaluation.

---
identifier: "/us/cfr/t30/s15.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 15.3 - Observers at tests and evaluation."
title_number: 30
title_name: "Mineral Resources"
section_number: "15.3"
section_name: "Observers at tests and evaluation."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "B"
subchapter_name: "TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS"
part_number: "15"
part_name: "REQUIREMENTS FOR APPROVAL OF EXPLOSIVES AND SHEATHED EXPLOSIVE UNITS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 957."
regulatory_source: "53 FR 46761, Nov. 18, 1988, unless otherwise noted."
cfr_part: "15"
---


# 15.3 Observers at tests and evaluation.

Only personnel of MSHA, designees of MSHA, representatives of the applicant, and such other persons as agreed upon by MSHA and the applicant shall be present during tests and evaluations conducted under this part.

[70 FR 46342, Aug. 9, 2005]