---
kind: "unit"
title: "30"
title_heading: "Mineral Resources"
key: "chI/subchB/part7/subpartE"
level: "subpart"
label: "Subpart E"
heading: "Diesel Engines Intended for Use in Underground Coal Mines"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/30/chI-subchB-part7-subpartE"
sections_count: 12
---

# Subpart E — Diesel Engines Intended for Use in Underground Coal Mines

Title 30 C.F.R. — Mineral Resources › Chapter I — Mine Safety and Health Administration, Department of Labor › Subchapter B — Testing, Evaluation, and Approval of Mining Products › Part 7 — Testing by Applicant or Third Party

## Sections

- [§7.81. Purpose and effective date.](/cfr/30/7.81.md)
- [§7.82. Definitions.](/cfr/30/7.82.md)
- [§7.83. Application requirements.](/cfr/30/7.83.md)
- [§7.84. Technical requirements.](/cfr/30/7.84.md)
- [§7.85. Critical characteristics.](/cfr/30/7.85.md)
- [§7.86. Test equipment and specifications.](/cfr/30/7.86.md)
- [§7.87. Test to determine the maximum fuel-air ratio.](/cfr/30/7.87.md)
- [§7.88. Test to determine the gaseous ventilation rate.](/cfr/30/7.88.md)
- [§7.89. Test to determine the particulate index.](/cfr/30/7.89.md)
- [§7.90. Approval marking.](/cfr/30/7.90.md)
- [§7.91. Post-approval product audit.](/cfr/30/7.91.md)
- [§7.92. New technology.](/cfr/30/7.92.md)