### Question
How does the law define high-assay low-enriched uranium?


### Answer
Under *42 U.S.C. § 16281*, **high-assay low-enriched uranium** is defined as:

> uranium having an assay greater than 5.0 weight percent and less than 20.0 weight percent of the uranium-235 isotope

#### Citation:
  - *42 U.S.C. § 16281*
  - Heading: **CHAPTER 149-NATIONAL ENERGY POLICY AND PROGRAMS > SUBCHAPTER IX-RESEARCH AND DEVELOPMENT > Part E-Nuclear Energy**

