You can search for a keyword in the Code of Federal Regulations database two different ways.
Example: Search for the terms “certain dangerous cargo” and “ammonium nitrate”
Begin by using the Advanced Search option at the top of the main page. You will use the Text option from the drop-down menu.
You can also search using the one-box search bar at the top of the main page. From here type:”certain dangerous cargo” AND “ammonium nitrate” and select the Just search for option.