Tap any paragraph to write a margin note. Your notes collect in the Desk below the text and file under cases with @. The side-by-side margin rail opens on a larger screen.

§
Marginalia
Code · CFR · Title 30 — Mineral Resources · Part 57 · § 57.22209

§ 57.22209. Auxiliary fans (I-C mines).

50 words·~1 min read·/us/cfr/t30/s§ 57.22209·

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

Electric auxiliary fans shall be approved by MSHA under the applicable requirements of 30 CFR part 18. Tests for methane shall be made at electric auxiliary fans before they are started. Such fans shall not be operated when air passing over or through them contains 0.5 percent or more methane.
Connections1 off-index
1 reference not yet in our index
  • 30 CFR 18
Citation graph
cites case law
§ 57.22209
Auxiliary fans (I-C mines).
Cite30 CFR 18
Cites 1Cited by 0 across 0 sources
★   the supreme law of the land   ★
Don't Tread on Me
E Pluribus Unum — out of many, one

"If you don't know your rights, you don't have any."

Marginalia · a citizen's law index
A research desk, not legal advice. Always read the cited source before relying on a summary.
Questions or an issue? support@self-law.org
disclaimerMarginalia is a research index, not a law firm. Nothing on this site is legal, tax, or financial advice and no attorney–client relationship is formed by using it. Statutes, regulations, and case law change; summaries, search results, AI output, and member posts may be incomplete, out of date, or wrong. Any interpretation drawn from material on this site should be validated by a licensed attorney in your jurisdiction before you act on it.