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 71 · § 71.203

§ 71.203. Certified person; maintenance and calibration.

112 words·~1 min read·/us/cfr/t30/s§ 71.203·

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

(a)Approved sampling devices shall be maintained and calibrated by a certified person.
(b)To be certified, a person shall complete the applicable MSHA course of instruction and pass the MSHA examination demonstrating competency in maintenance and calibration procedures for approved sampling devices. Necessary maintenance of the sampling head assembly of a CMDPSU, or the cyclone assembly of a CPDM, can be performed by persons certified in sampling or maintenance and calibration.
(c)To maintain certification, a person must pass the MSHA examination demonstrating competency in maintenance and calibration procedures every three years.
(d)MSHA may revoke a person's certification for failing to properly carry out the required maintenance and calibration procedures.
★   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 Statutes, regulations, and case law change; summaries, search results, AI output, and member posts may be incomplete, out of date, or wrong.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.