30 CFR § 27.9 - Date for conducting tests.
---
identifier: "/us/cfr/t30/s27.9"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 27.9 - Date for conducting tests."
title_number: 30
title_name: "Mineral Resources"
section_number: "27.9"
section_name: "Date for conducting tests."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "B"
subchapter_name: "TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS"
part_number: "27"
part_name: "METHANE-MONITORING SYSTEMS"
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, 961."
regulatory_source: "31 FR 10607, Aug. 9, 1966, unless otherwise noted."
cfr_part: "27"
---
# 27.9 Date for conducting tests.
The date of receipt of an application will determine the order of precedence for investigation and testing. The applicant will be notified of the date on which tests will begin.
If an assembly, subassembly, or component fails to meet any of the requirements, testing of it may be suspended and other items may be tested. However, if the cause of failure is corrected, testing will be resumed after completing such other test work as may be in progress.
[31 FR 10607, Aug. 9, 1966, as amended at 70 FR 46343, Aug. 9, 2005]