30 CFR § 14.20 Requirements for the Approval of Flame-Resistant Conveyor Belts§ 14.20 Flame resistance.Current through Jul 27, 2026 · Read all of Part 14Conveyor belts for use in underground coal mines must be flame-resistant and: (a) Tested in accordance with § 14.22 of this part; or (b) Tested in accordance with an alternate test determined by MSHA to be equivalent under 30 CFR §§ 6.20 and 14.4(e).