30 CFR § 56.7807 - Flushing the combustion chamber.

---
identifier: "/us/cfr/t30/s56.7807"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 56.7807 - Flushing the combustion chamber."
title_number: 30
title_name: "Mineral Resources"
section_number: "56.7807"
section_name: "Flushing the combustion chamber."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "K"
subchapter_name: "METAL AND NONMETAL MINE SAFETY AND HEALTH"
part_number: "56"
part_name: "SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES"
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. 811."
regulatory_source: "50 FR 4054, Jan. 29, 1985, unless otherwise noted."
cfr_part: "56"
---


# 56.7807 Flushing the combustion chamber.

The combustion chamber of a jet drill stem which has been sitting unoperated in a drill hole shall be flushed with a suitable solvent after the stem is pulled up.