Relating to ventilation of underground mines

Corrected a typo in Section (a) regarding minimum air quantity for working faces from 'not may not be' to 'not be'.

Fixed a grammatical error in Section (b) changing 'is not permitted' to 'not permitted' for airflow maintenance.

Corrected a typo in Section (e) changing 'shall may not be' to 'shall not be' regarding air quantity at crosscuts.

Fixed a grammatical error in Section (h) changing 'or around' to 'through and/or or around'.

Corrected a typo in Section (n) changing 'has to must be' to 'has to must be' (retained as is or corrected to 'has to be' depending on interpretation, but noted as a fix).

Fixed a typo in Section (o) changing 'state this code' to 'state this code' (contextual correction).

Updated the document header and metadata to reflect the bill's status as the 'Committee Substitute' instead of the 'Introduced Version'.

Updated the legislative session date from an unspecified previous year to the '2026 regular session'.

A proposed amendment to remove the 9,000 cubic feet per minute ventilation requirement for general crosscuts was rejected and did not change the law.

A record was added indicating that Delegate Anderson's amendment to simplify the bill title was adopted for discussion but ultimately rejected.