# 30 CFR 27.20 — Quality of material, workmanship, and design.

- **Chapter:** CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
- **Subchapter:** SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS
- **Part:** PART 27—METHANE-MONITORING SYSTEMS
- **Subpart:** B
- **Snapshot current through:** 2026-08-19
- **Official eCFR:** https://www.ecfr.gov/current/title-30/chapter-I/subchapter-B/part-27/subpart-B/section-27.20

## Current public text

This compact checkpoint contains the hierarchy and official link for this section. Retrieve the complete static Title 30 corpus at `/data/title30-sections.json` or follow the official eCFR link above.

## Provenance

- Source: Electronic Code of Federal Regulations, Title 30
- Representation: Realm public-data crosswalk
- Legal status: The eCFR is an editorial compilation; consult the official source before relying on the text.