| 12/24/1981 | Specification and Usage Requirements for 3AL Seamless, Aluminum Cylinders | HM-176 | FR | 46 FR 62452 |
| 12/21/1981 | Transportation of Limited Quantities of Radioactive Materials and Devices | HM-166F | NPRM | 46 FR 61908 |
| 12/3/1981 | Conversion of Individual Exemptions to Regulations of General Applicability | HM-139D | FR | 46 FR 58693 |
| 11/30/1981 | Listing of Hazardous Materials | HM-145C | FR | 46 FR 58086 |
| 11/9/1981 | Shipment of Hazardous Materials; Miscellaneous Amendments | HM-166G | FR | 46 FR 55266 |
| 10/22/1981 | Dispersant and Refrigerant Gases; Removal of Obsolete Compliance Reporting Requirements | HM-166H | FR | 46 FR 51775 |
| 10/19/1981 | Enforcement Procedures and Related Miscellaneous Proposals; Extension of Comment Period | HM-138A | NPRM | 46 FR 51261 |
| 10/15/1981 | Identification Numbers Requirement; Extension of Compliance Date | HM-126A | FR | 45 FR 50800 |
| 10/8/1981 | Shipment of Hazardous Materials; Miscellaneous Amendments | HM-166G | FR | 46 FR 49889 |
| 10/8/1981 | Dispersant and Refrigerant Gases; Removal of Obsolete Reporting Requirements | HM-166H | FR | 46 FR 49883 |
| 9/24/1981 | Enforcement Procedures and Related Miscellaneous Proposals | HM-138A | NPRM | 46 FR 47091 |
| 9/24/1981 | Transportation of Anhydrous Ammonia in Intrastate Commerce | HM-166K | NPRM | 46 FR 47099 |
| 9/14/1981 | Carriage of Tear Gas Devices Aboard Aircraft; Extension of Comment Period | HM-166J | NPRM | 46 FR 45652 |
| 9/14/1981 | Definition Oxidizer; Extension of Comment Period | HM-179 | ANPRM | 46 FR 45652 |
| 9/3/1981 | Definition of Flammable Solid; Extension of Comment Period | HM-178 | ANPRM | 46 FR 44198 |
| 8/24/1981 | Specifications for Tank Cars | HM-174 | FR | 46 FR 42678 |
| 8/10/1981 | Carriage of Tear Gas Devices Aboard Aircraft | HM-166J | NPRM | 46 FR 40540 |
| 7/23/1981 | Placarding Empty Tank Cars | HM-180 | ANPRM | 46 FR 37951 |
| 7/16/1981 | Intermodal Portable Tanks; Delay of Certain Compliance Dates | HM-167 | FR | 46 FR 36860 |
| 6/22/1981 | Use of United Nations Shipping Descriptions; Correction | HM-171 | FR | 46 FR 32250 |
| 6/15/1981 | Definition of Oxidizer | HM-179 | ANPRM | 46 FR 31294 |
| 6/4/1981 | Conversion of Individual Exemptions into Regulations of General Applicability | HM-139D | NPRM | 46 FR 29973 |
| 6/4/1981 | Requirements for Transportation of Wet Electric Storage Batteries | HM-173 | NPRM | 46 FR 29968 |
| 6/1/1981 | Use of United Nations Shipping Descriptions | HM-171 | FR | 46 FR 29392 |
| 5/28/1981 | International Maritime Dangerous Goods Code; Matter Incorporated by Reference | HM-22 | FR | 46 FR 28657 |
| 5/18/1981 | Transportation of Liquefied Petroleum Gas in Intrastate Commerce | HM-166I | NPRM | 46 FR 27146 |
| 5/7/1981 | Definition of Flammable Solid | HM-178 | ANPRM | 46 FR 25492 |
| 4/30/1981 | Intermodal Portable Tanks; Correction | HM-167 | FR | 46 FR 24183 |
| 4/30/1981 | Intermodal Portable Tanks--"Trailer-on-Flatcar Service" | HM-167 | FR | 46 FR 24185 |
| 4/30/1981 | Air Transportation of Limited Quantities of Low-Level Radioactive Materials; Exemption Renewal | HM-149C | FR | 46 FR 24184 |
| 4/27/1981 | Withdrawal of Bureau of Explosives Delegations of Authority and Miscellaneous Amendments | HM-163E | FR | 46 FR 23462 |
| 4/16/1981 | Withdrawal of Bureau of Explosives Delegations of Authority and Miscellaneous Amendments | HM-163E | FR | 46 FR 22194 |
| 4/9/1981 | Air Transportation of Limited Quantities of Low-Level Radioactive Materials; Exemption Renewal | HM-149C | NPRM | 46 FR 21202 |
| 3/30/1981 | Shippers; General Requirements for Shipments and Packagings; Correction | HM-174 | FR | 46 FR 19236 |
| 3/30/1981 | Listing of Hazardous Materials | HM-145C | FR | 46 FR 19235 |
| 3/19/1981 | Ammonium Hydroxide; Shippers General Requirements for Shipments and Packagings | HM-166G | FR | 46 FR 17564 |
| 3/19/1981 | Listing of Hazardous Materials | HM-145C | FR | 46 FR 17738 |
| 1/29/1981 | Intermodal Portable Tanks | HM-167 | FR | 46 FR 9880 |
| 1/26/1981 | Shippers; Specifications for Tank Cars | HM-174 | FR | 46 FR 8005 |
| 1/26/1981 | Public Hearing and Request for Comments on Trailer-on-Flatcar Transportation of Hazardous Materials | HM-177 | NPRM | 46 FR 8055 |
| 1/19/1981 | Radioactive Materials; Routing and Driver Training Requirements | HM-164 | FR | 46 FR 5298 |
| 1/8/1981 | Shipment of Hazardous Materials; Miscellaneous Amendments | HM-166G | NPRM | 46 FR 2126 |
| 1/8/1981 | Hazardous Materials Table and Hazardous Materials Communications Regulations; Shippers--General Regulations for Shipments and Packagings; Dispersant and Refrigerant Gases | HM-166H | NPRM | 46 FR 2121 |
| 12/16/1980 | Limited Quantities of Radioactive Materials; Correction | HM-166F | ANPRM | 45 FR 82681 |
| 12/11/1980 | Hazardous Materials: Miscellaneous Amendments | HM-56 | FR | 45 FR 81569 |
| 12/8/1980 | General Information, Regulations, and Definitions; Change in Mailing Address for Hazardous Materials Incident Reports | HM-36A | FR | 45 FR 80829 |
| 12/8/1980 | Limited Quantities of Radioactive Materials | HM-166F | ANPRM | 45 FR 80843 |
| 11/10/1980 | Identification Numbers, Hazardous Wastes, Hazardous Substances, International Descriptions, Improved Descriptions, Forbidden Materials, and Organic Peroxides | HM-118; HM-126A; HM-126B; HM-145A; HM-145B; HM-159; HM-171 | FR | 45 FR 74640 |
| 11/6/1980 | Elimination of Certain Reporting Requirements | HM-36A | FR | 45 FR 73682 |
| 10/20/1980 | Withdrawal of Certain Bureau of Explosives Delegations of Authority and Proposed Miscellaneous Amendments | HM-163E | NPRM | 45 FR 69272 |
| 10/16/1980 | Shipment of Hazardous Materials by Air; Miscellaneous Proposals; Revision | HM-166B | FR | 45 FR 68653 |
| 9/18/1980 | Hazardous Materials Regulations; Miscellaneous Amendments | HM-166D | FR | 45 FR 62079 |
| 9/11/1980 | Termination of Certain Regulations; Obsolete Packaging Specification | HM-166C | FR | 45 FR 59887 |
| 9/4/1980 | Specification and Usage Requirements for 3AL Seamless, Aluminum Cylinders | HM-176 | NPRM | 45 FR 58632 |
| 8/14/1980 | Specification and Usage Requirements for 3AL Seamless, Aluminum Cylinders | HM-176 | NPRM | 45 FR 54097 |
| 7/31/1980 | Shippers; Specifications for Tank Cars | HM-174 | NPRM | 45 FR 50840 |
| 7/28/1980 | Labeling of Radioactive Materials Packages | HM-169 | FR | 45 FR 49939 |
| 7/21/1980 | Shippers; Specifications for Tank Cars | HM-174 | NPRM | 45 FR 48671 |
| 7/21/1980 | Shippers-Specifications for Tank Cars | HM-175 | ANPRM | 45 FR 48668 |
| 7/21/1980 | Conversion of Individual Exemptions to Regulations of General Applicability | HM-139C | NPRM | 45 FR 48631 |
| 7/17/1980 | Hazardous Materials Aboard Aircraft; Correction | HM-168 | FR | 45 FR 47843 |
| 7/10/1980 | Conversion of Exemptions to Regulations of General Applicability | HM-139C | FR | 45 FR 46419 |
| 7/10/1980 | Identification Numbers, Hazardous Wastes | HM-126A; HM-145A; HM-171 | FR | 45 FR 46417 |
| 6/30/1980 | Identification Numbers, Hazardous Substances, International Descriptions | HM-126A; HM-145B; HM-171 | FR | 45 FR 43761 |
| 6/16/1980 | Elimination of Certain Reporting Requirements | HM-36A | NPRM | 45 FR 40627 |
| 5/27/1980 | Hazardous Materials Aboard Aircraft | HM-168 | FR | 45 FR 35329 |
| 5/22/1980 | Identification Numbers, Hazardous Wastes, Hazardous Substances, International Descriptions, Improved Descriptions, Forbidden Materials, and Organic Peroxides | HM-118; HM-126A; HM-126B; HM-145A; HM-145B; HM-159; HM-171 | FR | 45 FR 34560 |
| 5/22/1980 | Highway Routing of Radioactive Materials; Additional Public Hearings; Extension of Time for Public Comment | HM-164 | NPRM | 45 FR 34316 |
| 5/19/1980 | Hazardous Materials Regualtions; Withdrawal of Certain Bureau of Explosives Delegations of Authority | HM-163D | FR | 45 FR 32692 |
| 5/19/1980 | Shipments by Hazardous Materials by Air; Miscellaneous Amendments | HM-166E | FR | 45 FR 32690 |
| 5/15/1980 | Highway Routing of Radioactive Materials; Additional Public Hearings; Extension of Time for Public Comment | HM-164 | NPRM | 45 FR 32030 |
| 4/14/1980 | Shipment of Hazardous Materials; Proposed Miscellaneous Amendments | HM-166D | NPRM | 45 FR 25083 |
| 3/27/1980 | Requirements for Transportation of Radioactive Materials | HM-152 | FR | 45 FR 20097 |
| 3/24/1980 | Conversion of Individual Exemptions into Regulations of General Applicability | HM-139C | NPRM | 45 FR 18994 |
| 3/6/1980 | Highway Routing of Radioactive Materials; Public Hearing | HM-164 | NPRM | 45 FR 14609 |
| 2/28/1980 | International Maritime Dangerous Goods Code; Matter Incorporated by Reference | HM-22 | FR | 45 FR 13091 |
| 2/28/1980 | Shipment of Hazardous Materials by Air; Miscellaneous Proposals | HM-166B | FR | 45 FR 13087 |
| 2/28/1980 | Public Meetings and Request for Comment on the Transportation of Wet Electric Storage Batteries | HM-173 | ANPRM | 45 FR 13153 |
| 2/14/1980 | Marking and Record Retention Requirements for Cylinders | HM-172 | NPRM | 45 FR 9960 |
| 2/14/1980 | Matter Incorporated by Reference | HM-22 | NPRM | 45 FR 9960 |
| 1/31/1980 | Aircraft Accessibility Requirements for Radioactive Materials | HM-168 | FR | 45 FR 6946 |
| 1/31/1980 | Highway Routing of Radioactive Materials | HM-164 | NPRM | 45 FR 7140 |
| 1/24/1980 | Conversion of Individual Exemptions to Regulations of General Applicability; Revision of Amendment 173-133 | HM-139B | FR | 45 FR 5737 |
| 12/10/1979 | Detonators and Detonating Primers | HM-161 | FR | 44 FR 70721 |
| 11/26/1979 | Withdrawal of Certain Bureau of Explosives Delegations of Authority | HM-163D | NPRM | 44 FR 67476 |
| 11/19/1979 | Withdrawal of Certain Bureau of Explosives Delegation of Authorities | HM-163B | FR | 44 FR 66197 |
| 11/8/1979 | Improved Descriptions of Hazardous Materials for Emergency Response | HM-126B | NPRM | 44 FR 65020 |
| 10/22/1979 | Requirements for Transportation of Radioactive Materials; Extension of Comment Period | HM-169 | NPRM | 44 FR 60771 |
| 10/18/1979 | Conversion of Individual Exemptions to Regualtions of General Applicability | HM-139B | FR | 44 FR 60097 |
| 10/18/1979 | Termination of Certain Regulations; Obsolete Packaging Specification | HM-166C | NPRM | 44 FR 60112 |
| 10/11/1979 | Forbidden Materials | HM-159 | NPRM | 44 FR 58767 |
| 8/23/1979 | Research and Special Programs Administration; Miscellaneous Amendments | HM-166A | FR | 44 FR 49455 |
| 8/16/1979 | Transportation of Asbestos; Additional Revisions of Amendment No. 173-123 | HM-160 | FR | 44 FR 47937 |
| 8/16/1979 | Requirements for Transportation of Radioactive Materials; Reopening of Comment Period | HM-169 | NPRM | 44 FR 47966 |
| 7/26/1979 | Display of Hazardous Materials Identification Numbers; Improved Emergency Response Capability; Descriptions for Organic Peroxides; Extension of Comment Period | HM-126A | NPRM | 44 FR 43858 |
| 7/26/1979 | Forbidden Materials | HM-159 | NPRM | 44 FR 43861 |
| 7/26/1979 | Use of United Nations Shipping Descriptions | HM-171 | NPRM | 44 FR 43864 |
| 6/25/1979 | Individual Exemptions, Conversion to Regulations of General Applicability | HM-139B | NPRM | 44 FR 37017 |
| 6/21/1979 | Cryogenic Liquids; Extension of Comment Period and Additional Proposals | HM-115 | NPRM | 44 FR 36211 |
| 6/18/1979 | General Information, Regulations, and Definitions; Matter Incorporated by Reference | HM-22 | FR | 44 FR 34960 |
| 6/14/1979 | Display of Hazardous Materials Identification Numbers; Improved Emergency Response Capability | HM-126A | NPRM | 44 FR 34171 |
| 6/7/1979 | Display of Hazardous Materials Identification Numbers; Improved Emergency Response Capability | HM-126A | NPRM | 44 FR 32972 |
| 5/31/1979 | Blasting Agents | HM-143 | FR | 44 FR 31180 |
| 5/29/1979 | Matter Incorporated by Reference | HM-22 | FR | 44 FR 30686 |
| 5/21/1979 | Shipment of Hazardous Materials by Air; Miscellaneous Proposals | HM-166B | NPRM | 44 FR 29503 |
| 5/10/1979 | Transportation of Hazardous Substances; Extension of Comment Period | HM-145B | NPRM | 44 FR 27460 |
| 5/7/1979 | Shipping Container Specifications; Withdrawal of Certain Bureau of Explosives Delegation of Authorities | HM-163B | NPRM | 44 FR 26772 |
| 5/3/1979 | Proposed Miscellaneous Amendments | HM-166A | NPRM | 44 FR 25886 |
| 4/30/1979 | Air Transportation of Limited Quantities of Low-Level Radioactive Materials; Exemption Renewal | HM-149B | FR | 44 FR 25238 |
| 4/23/1979 | Matter Incorporated by Reference | HM-22 | NPRM | 44 FR 23880 |
| 4/19/1979 | Shipment of Hazardous Materials by Water | HM-166 | FR | 44 FR 23225 |
| 4/19/1979 | Requirements for Transportation of Radioactive Materials; Extension of Comment Period | HM-169 | NPRM | 44 FR 23266 |
| 4/16/1979 | Label and Placard Colors Corrections | HM-151A | FR | 44 FR 22466 |
| 4/12/1979 | Conversion of Individual Exemptions to Regulations of General Applicability | HM-139A | FR | 44 FR 21793 |
| 4/5/1979 | Cryogenic Liquids; Corrections and Additions | HM-115 | NPRM | 44 FR 20461 |
| 4/5/1979 | Shippers--General Requirements for Shipments and Packaging; Specifications for Tank Cars; Marking of Tank Car Tanks | HM-170 | FR | 44 FR 20433 |
| 3/29/1979 | Transportation of Asbestos; Revision of Amendment No. 173-123; Effective Date Extension | HM-160 | FR | 44 FR 18673 |
| 3/26/1979 | Approvals/Authorizations Issued by the Bureau of Explosives | HM-163A | FR | 44 FR 18027 |
| 3/15/1979 | Hazardous Materials Table and Hazardous Materials Communications Regulations; Carriage by Aircraft | HM-149B | NPRM | 44 FR 15748 |
| 3/12/1979 | Specification 1M Glass Carboy in Polystyrene Packaging and Cancellation of Certain Obsolete Specification Packagings | HM-117 | FR | 44 FR 14194 |
| 3/8/1979 | Cryogenic Liquids | HM-115 | NPRM | 44 FR 12826 |
| 3/1/1979 | Hazardous Substances | HM-145B | NPRM | 44 FR 11569 |
| 2/22/1979 | Transportation of Hazardous Substances | HM-145B | NPRM | 44 FR 10676 |
| 2/15/1979 | Label and Placard Colors | HM-151A | FR | 44 FR 9756 |
| 2/8/1979 | Transportation of Hazardous Waste Materials | HM-145A | NPRM | 44 FR 7988 |
| 1/29/1979 | Flattening Test for Seamless Cylinders | HM-156 | FR | 44 FR 5666 |
| 1/18/1979 | Matter Incorporated by Reference | HM-22 | FR | 44 FR 3707 |
| 1/8/1979 | Location of Manholes Assemblies and Certification Plates on Cargo Tanks | HM-136 | FR | 44 FR 1739 |
| 1/8/1979 | Individual Exemptions, Conversion to Regulations of General Applicability | HM-139A | NPRM | 44 FR 1767 |
| 1/8/1979 | Requirements for Transportation of Radioactive Materials | HM-169 | NPRM | 44 FR 1852 |
