30 CFR § 35.2 - Definitions.

---
identifier: "/us/cfr/t30/s35.2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 35.2 - Definitions."
title_number: 30
title_name: "Mineral Resources"
section_number: "35.2"
section_name: "Definitions."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "B"
subchapter_name: "TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS"
part_number: "35"
part_name: "FIRE-RESISTANT HYDRAULIC FLUIDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 957, 961."
regulatory_source: "Schedule 30, 24 FR 10201, Dec. 17, 1959, unless otherwise noted."
cfr_part: "35"
---


# 35.2 Definitions.

As used in this part—

(a) *Permissible,* as applied to hydraulic fluids, means that the fluid conforms to the requirements of this part, and that a certificate of approval to that effect has been issued.

(b) *MSHA* means the United States Department of Labor, Mine Safety and Health Administration.

(c) *Certificate of approval* means a formal document issued by MESA stating that the fluid has met the requirements of this part for fire-resistant hydraulic fluids and authorizing the use of an official identifying marking so indicating.

(d) *Fire-resistant hydraulic fluid* means a fluid of such chemical composition and physical characteristics that it will resist the propagation of flame.

(e) *Concentrate* means a substance in concentrated form that might not be fire resistant as such but when mixed with water or other vehicle in accordance with instructions furnished by the applicant will constitute a fire-resistant hydraulic fluid.

(f) *Applicant* means an individual, partnership, company, corporation, association, or other organization that manufactures, compounds, refines, or otherwise produces, a fire-resistant hydraulic fluid or a concentrate for the production thereof, and seeks a certificate of approval.

[Sched. 30, 24 FR 10201, Dec. 17, 1959, as amended at 39 FR 24005, June 28, 1974; 43 FR 12317, Mar. 24, 1978]