| 11/29/1972 | Etiologic Agents | HM-96 | FR | 37 FR 25235 |
| 11/29/1972 | Etiologic Agents | HM-96 | NPRM | 37 FR 25243 |
| 11/18/1972 | Matter Incorporated by Reference | HM-22 | NPRM | 37 FR 24678 |
| 10/14/1972 | Hazard Information System; Notice of Extension of Time to File Comments | HM-103 | ANPRM | 37 FR 21857 |
| 10/12/1972 | Blasting Caps with other Explosives | HM-95 | FR | 37 FR 21531 |
| 9/30/1972 | Etiologic Agents | HM-96 | FR | 37 FR 20554 |
| 9/26/1972 | Definition of Flammable, Combustible, & Pyrophoric Liquids | HM-102 | NPRM | 37 FR 20121 |
| 9/16/1972 | Proposed Classification & Pkg. of Corrosive Liquids | HM-57 | FR | 37 FR 18918 |
| 9/2/1972 | RAM-Preparation of Packages for Shipment | HM-98 | FR | 37 FR 17969 |
| 8/30/1972 | Tank Car Utilization | HM-105 | NPRM | 37 FR 17565 |
| 8/15/1972 | Matter Incorporated by Reference | HM-22 | FR | 37 FR 16496 |
| 8/15/1972 | Boron Tribromide | HM-85 | FR | 37 FR 16496 |
| 8/10/1972 | Miscellaneous Amendments | HM-104 | NPRM | 37 FR 16108 |
| 7/21/1972 | Shipment of Hazardous Materials | HM-94 | FR | 37 FR 14587 |
| 7/18/1972 | Phosphorous Pentasulfide | HM-80 | NPRM | 37 FR 14239 |
| 6/27/1972 | Hazard Information System | HM-103 | ANPRM | 37 FR 12660 |
| 6/27/1972 | Cylinders Manufactured Outside United States; Notice of Extension of Time to File Comments | HM-74 | NPRM | 37 FR 12645 |
| 6/24/1972 | Class B propellants in Fiber Drums | HM-93 | FR | 37 FR 12494 |
| 6/15/1972 | Definition of Flammable, Combustible, & Pyrophoric Liquids | HM-102 | NPRM | 37 FR 11898 |
| 6/10/1972 | Matter Incorporated by Reference | HM-22 | NPRM | 37 FR 11685 |
| 5/13/1972 | Shipment of Hazardous Materials | HM-94 | FR | 37 FR 9632 |
| 5/6/1972 | Retest Requirements for Tank Cars | HM-92 | FR | 37 FR 9221 |
| 4/26/1972 | Proposed Classification & Pkg. of Corrosive Liquids | HM-57 | FR | 37 FR 8383 |
| 4/8/1972 | Markings on Tank Cars | HM-101 | NPRM | 37 FR 7104 |
| 4/5/1972 | Ethylene Oxide; Opening in Tank Car Heads | HM-100 | NPRM | 37 FR 6871 |
| 4/4/1972 | Specification 3AX, 3AAX, & 3T Cylinders | HM-99 | NPRM | 37 FR 6747 |
| 3/23/1972 | Proposed Classification & Pkg. of Corrosive Liquids | HM-57 | FR | 37 FR 5946 |
| 3/17/1972 | RAM-Preparation of Packages for Shipment | HM-98 | NPRM | 37 FR 5641 |
| 3/1/1972 | Shipment of Hazardous Materials | HM-97 | NPRM | 37 FR 4295 |
| 2/17/1972 | Flash Points - Flammable Liquids | HM-67 | FR | 37 FR 3524 |
| 2/11/1972 | Interlocking Couplers and Restriction of Capacity of Tank Cars | HM-38 | FR | 37 FR 3058 |
| 2/9/1972 | Flash Points - Flammable Liquids | HM-67 | FR | 37 FR 2885 |
| 2/9/1972 | Portable Tank Specifications | HM-68 | FR | 37 FR 2885 |
| 2/3/1972 | Cylinders Manufactured Outside United States; Reopening for Additional Comments | HM-74 | NPRM | 37 FR 2588 |
| 1/12/1972 | Cargo Tank Attachments | HM-87 | FR | 37 FR 444 |
| 1/6/1972 | Exemption Termination Polypropylene in Tank Cars | HM-88 | FR | 37 FR 149 |
| 12/21/1971 | Blasting Caps with other Explosives | HM-95 | NPRM | 36 FR 24125 |
| 12/16/1971 | Class B propellants in Fiber Drums | HM-93 | NPRM | 36 FR 23931 |
| 11/20/1971 | Design Approvals for Radioactive Materials Packages | HM-73 | NPRM | 36 FR 22181 |
| 11/19/1971 | Shipment of Hazardous Materials | HM-94 | NPRM | 36 FR 22073 |
| 11/6/1971 | Specifications for Tank Cars | HM-89 | FR | 36 FR 21339 |
| 11/6/1971 | Class B propellants in Fiber Drums | HM-93 | NPRM | 36 FR 21360 |
| 11/5/1971 | Miscellaneous Amendments Boron Tribromide | HM-85 | FR | 36 FR 21287 |
| 11/4/1971 | Reports of Hazardous Materials Incidents | HM-36 | FR | 36 FR 21200 |
| 11/4/1971 | Reclassification of Fusee | HM-46 | FR | 36 FR 21201 |
| 10/27/1971 | Compressed Gases in Cylinders | HM-76 | FR | 36 FR 20604 |
| 10/16/1971 | Cold Compressed Gases in Tank Cars | HM-91 | NPRM | 36 FR 20166 |
| 10/16/1971 | Retest Requirements for Tank Cars | HM-92 | NPRM | 36 FR 20173 |
| 10/5/1971 | Removal of Label Exemption | HM-28 | FR | 36 FR 19370 |
| 9/23/1971 | Specifications for Tank Cars | HM-90 | NPRM | 36 FR 18873 |
| 9/3/1971 | Matter Incorporated by Reference | HM-22 | FR | 36 FR 17649 |
| 8/25/1971 | Rulemaking Procedure | HM-1 | FR | 36 FR 16658 |
| 8/25/1971 | Specifications for Tank Cars | HM-90 | NPRM | 36 FR 16680 |
| 8/24/1971 | Cylinder Specifications | HM-69 | FR | 36 FR 16579 |
| 8/18/1971 | Proposed Classification & Pkg. of Corrosive Liquids | HM-57 | NPRM | 36 FR 15762 |
| 8/12/1971 | Sulfuric Acid | HM-81 | FR | 36 FR 15047 |
| 8/10/1971 | Chlorine in Tank Cars | HM-84 | FR | 36 FR 14696 |
| 7/24/1971 | Hydrogen Sulfide Gas in Cargo Tank Trucks and Tank Cars | HM-70 | | 36 FR 13792 |
| 7/24/1971 | Cylinders Manufactured Outside United States; Notice of Extension to File Comments | HM-74 | NPRM | 36 FR 13793 |
| 7/24/1971 | Classification and Labeling of Hazardous Materials; Notice of Extension of Time to File Comments | HM-8 | NPRM | 36 FR 13793 |
| 7/21/1971 | Specifications for Tank Cars | HM-89 | NPRM | 36 FR 13405 |
| 7/15/1971 | Exemption Termination Polypropylene in Tank Cars | HM-88 | NPRM | 36 FR 13173 |
| 7/14/1971 | Difluoromono-chloroethane in Tank Trucks and Tank Cars | HM-82 | FR | 36 FR |
| 7/14/1971 | Matter Incorporated by Reference | HM-22 | FR | 36 FR 13093 |
| 7/14/1971 | Hydrogen Chloride in Manifolded Cylinders | HM-83 | FR | 36 FR 13094 |
| 7/9/1971 | Reports of Hazardous Materials Incidents | HM-36 | NPRM | 36 FR 12913 |
| 6/30/1971 | Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards | OPS-5 | FR | 36 FR 12297 |
| 6/29/1971 | Matter Incorporated by Reference | HM-22 | NPRM | 36 FR 12239 |
| 6/18/1971 | Hypochlorite Solutions in Specification 37M Steel Overpack with 2S or 2SL Inner Container | HM-78 | FR | 36 FR 11734 |
| 6/15/1971 | Cargo Tank Attachments | HM-87 | NPRM | 36 FR 11524 |
| 6/10/1971 | Cylinders Manufactured Outside United States | HM-74 | NPRM | 36 FR 11224 |
| 6/4/1971 | Cargo Tank Use and Testing, Compressed Gases in Portable and Cargo Tanks, and Specification MC 331 | HM-86 | NPRM | 36 FR 10882 |
| 6/3/1971 | Bonding & Grounding Flammable Liquids in Cargo Tanks | HM-65 | FR | 36 FR 10784 |
| 6/3/1971 | Specification 3HT Cylinder Tensile Strength Limitation | HM-71 | FR | 36 FR 10785 |
| 6/2/1971 | Methylacetylene-Propadiene Stabilized | HM-77 | FR | 36 FR 10731 |
| 5/26/1971 | Quenching of Steel Cylinders | HM-75 | FR | 36 FR 9520 |
| 5/26/1971 | Transportation of Inhibited Vinyl Fluoride in Cargo Tanks | HM-79 | FR | 36 FR 9520 |
| 5/26/1971 | Boron Tribromide | HM-85 | NPRM | 36 FR 9602 |
| 5/26/1971 | Corrosive Liquids, N.O.S. Containers | HM- | NPRM | 36 FR 9598 |
| 5/25/1971 | Labeling & Classing of HM | HM-8 | NPRM | 36 FR 9449 |
| 5/19/1971 | Removal of Label Exemption | HM-28 | FR | 36 FR 9068 |
| 5/4/1971 | Transport of Highly Volatile Liquids | HM-6 | FR | 36 FR 8296 |
| 5/4/1971 | Withdrawal of Proposed Tank Car Specifications | HM-10 | FR | 36 FR 8329 |
| 4/16/1971 | Chlorine in Tank Cars | HM-84 | NPRM | 36 FR 7258 |
| 4/14/1971 | Matter Incorporated by Reference | HM-22 | NPRM | 36 FR 7073 |
| 4/3/1971 | Hydrogen Chloride in Manifolded Cylinders | HM-83 | NPRM | 36 FR 6437 |
| 3/27/1971 | Difluoromono-chloroethane in Tank Trucks and Tank Cars | HM-82 | NPRM | 36 FR 5806 |
| 3/26/1971 | Location of Placard Holders on Tank Cars | HM-66 | FR | 36 FR 5705 |
| 3/23/1971 | Carbon Monoxide in Cylinders and Increased Filling Limitations | HM-29 | FR | 36 FR 5420 |
| 3/23/1971 | Phosphorous Oxychloride and Phosphorus Trichloride in Cargo Tanks | HM-72 | FR | 36 FR 5421 |
| 3/19/1971 | Sulfuric Acid | HM-81 | NPRM | 36 FR 5299 |
| 3/10/1971 | Phosphorous Pentasulfide | HM-80 | NPRM | 36 FR 4626 |
| 2/27/1971 | DOT Specifications 3A, 3AA, and 39 Cylinders Manufactured Outside United States | HM-74 | NPRM | 36 FR 3836 |
| 2/24/1971 | Portable Tank Specifications | HM-68 | NPRM | 37 FR 3428 |
| 2/23/1971 | Tank Car Specifications | HM-63 | | 36 FR 3376 |
| 2/18/1971 | Hypochlorite Solutions in Specification 37M Steel Overpack with 2S or 2SL Inner Container | HM-78 | NPRM | 36 FR 3130 |
| 2/12/1971 | Classification of Certain Hazardous Materials on basis of their Health Hazards | HM-51 | ANPRM | 36 FR 2934 |
| 2/4/1971 | Methylacetylene-Propadiene Stabilized | HM-77 | NPRM | 36 FR 2404 |
| 2/2/1971 | Special Composite Package for Electrolyte (Acid) or Alkaline Corrosive Battery Fluid | HM-25 | FR | 36 FR 1533 |
| 1/30/1971 | Removal of Label Exemption | HM-28 | FR | 36 FR 1473 |
| 1/30/1971 | Class A Poisons in Cylinders | HM-59 | FR | 36 FR 1472 |
| 1/30/1971 | Acrolein, Inhibited | HM-61 | FR | 36 FR 1472 |
| 1/23/1971 | Compressed Gases in Cylinders | HM-76 | NPRM | 36 FR 1153 |
| 1/19/1971 | DOT Specifications 3A, 3AA, and 39 Cylinders Manufactured Outside United States | HM-74 | NPRM | 36 FR 838 |
| 1/8/1971 | Design Approvals for Radioactive Materials Packages | HM-73 | NPRM | 36 FR 292 |
| 1/5/1971 | Retest of Damaged Tank Car Tanks | HM-58 | FR | 36 FR 64 |
| 12/17/1970 | Phosphorous Oxychloride and Phosphorus Trichloride in Cargo Tanks | HM-72 | NPRM | 35 FR 19121 |
| 12/16/1970 | Use of Specification 17 Series Steel Drums Amendments | HM-27 | FR | 35 FR 19021 |
| 12/16/1970 | Specification 3HT Cylinder Tensile Strength Limitation | HM-71 | NPRM | 35 FR 19025 |
| 12/12/1970 | Portable Tank Specification | HM-68 | NPRM | 35 FR 18919 |
| 12/12/1970 | Hydrogen Sulfide Gas in Cargo Tank Trucks and Tank Cars | HM-70 | NPRM | 35 FR 18919 |
| 12/11/1970 | Cylinder Specifications | HM-69 | NPRM | 35 FR 18879 |
| 12/5/1970 | Polyethylene Liners | HM-55 | FR | 35 FR 18528 |
| 12/5/1970 | Flash Points - Flammable Liquids | HM-67 | NPRM | 35 FR 18534 |
| 12/3/1970 | Matter Incorporated by Reference | HM-22 | FR | 35 FR 18382 |
| 12/2/1970 | Bonding and Grounding Flammable Liquid Cargo Tanks | HM-65 | NPRM | 35 FR 18323 |
| 12/2/1970 | Location of Placard Holders on Tank Cars | HM-66 | NPRM | 35 FR 18323 |
| 12/1/1970 | Special Permits | HM-64 | FR | 35 FR 18276 |
| 11/24/1970 | Interlocking Couplers and Restriction of Capacity of Tank Cars | HM-38 | | 35 FR 18009 |
| 11/21/1970 | Cargo Tanks in TOFC | HM-45 | FR | 35 FR 17950 |
| 11/19/1970 | Tank Car Specifications | HM-63 | FR | 35 FR 17790 |
| 11/13/1970 | Interlocking Couplers and Restriction of Capacity of Tank Cars | HM-38 | FR | 35 FR 17418 |
| 11/7/1970 | Transport of Highly Volatile Liquids | HM-6 | FR | 35 FR 17183 |
| 10/31/1970 | Reports of Hazardous Materials Incidents | HM-36 | FR | 35 FR 16836 |
| 10/29/1970 | Tank Car Specifications | HM-63 | NPRM | 35 FR 16741 |
| 10/27/1970 | Nitric Acid in Type 105A-ALW Tank Car | HM-52 | FR | 35 FR 16634 |
| 10/27/1970 | Acrolein, Inhibited | HM-61 | NPRM | 35 FR 16643 |
| 10/15/1970 | Request Advice on Speed Restrictions on Tank Cars | HM-60 | | 35 FR 16180 |
| 10/10/1970 | Class A Poisons in Cylinders | HM-59 | NPRM | 35 FR 16005 |
| 9/12/1970 | Extension of Retest for Safety Rel. Valves | HM-50 | FR | 35 FR 14402 |
| 9/9/1970 | Interlocking Couplers and Restriction of Capacity of Tank Cars | HM-38 | FR | 35 FR 14216 |
| 9/1/1970 | Dimethyl Ether in Cargo Tanks | HM-49 | FR | 35 FR 13837 |
| 8/31/1970 | Transportation of dangerous articles and magnetized materials | 9838 | NPRM | 35 FR 16829 |
| 8/29/1970 | Combustible Liquids | HM-42 | NPRM | 35 FR 13798 |
| 8/28/1970 | Refrigerant Gases in 2Q Packaging | HM-62 | NPRM | 35 FR 16683 |
| 8/22/1970 | Special Composite Package for Electrolyte (Acid) or Alkaline Corrosive Battery Fluid | HM-25 | NPRM | 35 FR 13465 |
| 8/22/1970 | Polyethylene Liners | HM-55 | NPRM | 35 FR 13464 |
| 8/7/1970 | MC330 and MC331 Cargo Tanks in Chlorine Service | HM-40 | FR | 35 FR 12610 |
| 8/7/1970 | Matter Incorporated by Reference | HM-48 | FR | 35 FR 12609 |
| 7/31/1970 | Use of Specification 17 Series Steel Drums Amendments | HM-27 | FR | 35 FR 12275 |
| 7/30/1970 | Oil Well Cartridges | HM-43 | FR | 35 FR 12207 |
| 7/30/1970 | Ethylene Imine, Inhibited in Tank Cars | HM-47 | FR | 35 FR 12208 |
| 7/23/1970 | Parathion and Methyl Parathion in Tank Cars | HM-44 | FR | 35 FR 11796 |
| 7/22/1970 | Specification for Fiberboard Boxes; Stitching Staples | HM-41 | FR | 35 FR 11686 |
| 7/22/1970 | Labeling & Classing of HM | HM-8 | NPRM | 35 FR 11742 |
| 7/17/1970 | Extended Use of Class 111AW3 Tank Cars | HM-54 | NPRM | 35 FR 11521 |
| 7/17/1970 | New Steel Drum specification 2E Bottles Marking Size | HM-9 | FR | 35 FR 11473 |
| 7/3/1970 | Change in Shipping Name and Removal of Authorization to Ship or Transport Dry Dimethylhexane Dihydroperoxide | HM-32 | FR | 35 FR 10858 |
| 6/13/1970 | Shipments made by way of common, contract, or private carriers by public highway | HM-53 | NPRM | 35 FR 9284 |
| 6/10/1970 | Nitric Acid in Type 105A-ALW Tank Car | HM-52 | NPRM | 35 FR 8946 |
| 6/6/1970 | Classification of Certain Hazardous Materials on basis of their Health Hazards | HM-51 | ANPRM | 35 FR 8831 |
| 6/3/1970 | Specification 3HT Cylinders: Tensile Strength Limitation | HM-71 | NPRM | 35 FR 10785 |
| 6/2/1970 | Dimethyl Ether in Cargo Tanks | HM-49 | NPRM | 35 FR 8502 |
| 5/29/1970 | Matter Incorporated by Reference | HM-48 | NPRM | 35 FR 8450 |
| 5/29/1970 | Extension of Retest Period for certain Safety Relief Valves | HM-50 | NPRM | 35 FR 8451 |
| 5/19/1970 | Cargo Tanks | HM-35 | FR | 35 FR 7700 |
| 5/6/1970 | Ethylene Imine, Inhibited in Tank Cars | HM-47 | NPRM | 35 FR 7127 |
| 5/6/1970 | Specification 1K Carboy for Certain Chlorides | HM-30 | FR | 35 FR 7120 |
| 5/6/1970 | Cyanides or Cyanide Mixtures | HM-33 | FR | 35 FR 7121 |
| 5/6/1970 | Aniline Oil | HM-37 | FR | 35 FR 7121 |
| 5/6/1970 | Extension of Retest Interval for Nonpressure Tank Cars | HM-39 | FR | 35 FR 7120 |
| 4/29/1970 | Liquefied Petroleum Gas in Cargo Tanks Constructed of Quenched and Tempered Steel | HM-34 | FR | 35 FR 6758 |
| 4/22/1970 | Reclassification of Fusee | HM-46 | NPRM | 35 FR 6439 |
| 4/15/1970 | Cargo Tanks in TOFC | HM-45 | NPRM | 35 FR 6151 |
| 4/9/1970 | Parathion and Methyl Parathion in Tank Cars | HM-44 | NPRM | 35 FR 5821 |
| 4/3/1970 | New Steel Drum specification 2E Bottles Marking Size | HM-9 | FR | 35 FR 5550 |
| 3/31/1970 | Extension of Specification 3HT Cylinder Service Life | HM-31 | FR | 35 FR 5331 |
| 3/31/1970 | Transport of Highly Volatile Liquids | HM-6 | FR | 35 FR 5332 |
| 3/7/1970 | Oil Well Cartridges | HM-43 | NPRM | 35 FR 4267 |
| 2/21/1970 | Combustible Liquids | HM-42 | NPRM | 35 FR 3298 |
| 2/10/1970 | Aniline Oil | HM-37 | NPRM | 35 FR |
| 2/10/1970 | Interlocking Couplers and Restriction of Capacity of Tank Cars | HM-38 | NPRM | 35 FR 2794 |
| 1/30/1970 | MC330 and MC331 Cargo Tanks in Chlorine Service | HM-40 | NPRM | 35 FR 1241 |
| 1/30/1970 | Specification for Fiberboard Boxes; Stitching Staples | HM-41 | NPRM | 35 FR 1242 |
| 1/28/1970 | Hazardous Materials in Specification 106a and 110a Tanks by Rail Freight and Highway | HM-14 | FR | 35 FR 1108 |
