CFR > Title 40 > Chapter I > Subchapter C > Part 61 > Subpart D CFR > Title 40 > Chapter I > Subchapter C > Part 61 > Subpart D – National Emission Standard for Beryllium Rocket Motor Firing Current as of: 2024 | Check for updates | Other versions § 61.40 Applicability § 61.41 Definitions § 61.42 Emission standard § 61.43 Emission testing–rocket firing or propellant disposal § 61.44 Stack sampling