Check-in and check-out system.

Wyo. Stat. Ann. § 30-3-109
in effect
Sign in to generate a plain English summaryAsk Belisarius Agent
Each mine shall have a check-in and check-out system that will identify every individual underground. An accurate record of persons in the mine consisting of a written record or a check board shall be kept on the surface in a place that will not be affected in the event of an explosion. The record shall bear a number identical to the identification check carried by the person underground.
Source: WY Statutes (Official Site)URL: https://wyoleg.gov/statutes/compress/title30.pdfFetched: 10/4/2026

Starting a business in Wyoming? Wyoming LLC guide: costs and requirements