---
kind: "section"
citation: "40 C.F.R. § 98.60"
title: "40"
number: "98.60"
heading: "Definition of the source category."
url: "https://uscodex.org/cfr/40/98.60"
---

# §98.60. Definition of the source category.

- (a) A primary aluminum production facility manufactures primary aluminum using the Hall-Héroult manufacturing process. The primary aluminum manufacturing process comprises the following operations:
  - (1) **Electrolysis in prebake and Søderberg cells.**
  - (2) **Anode baking for prebake cells.**
- (b) **This source category does not include experimental cells or research and development process units.**

## Notes

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.