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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 48
Chapter 4
Part 423 - PART 423—ENVIRONMENT, SUSTAINABLE ACQUISITION, AND MATERIAL SAFETY
Subpart 423.1 [423.107 - 423.107] - Subpart 423.1—Use of Recovered Materials and Biobased Products
Subpart 423.3 [423.301 - 423.301] - Subpart 423.3—Notice of Radioactive Material
Subpart 423.6 [423.601 - 423.601] - Subpart 423.6—Notice of Radioactive Material
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