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2019 Missouri Revised Statutes
Title XVIII - Labor and Industrial Relations
Chapter 293 - Mining Regulations
Section 293.120 Air safety requirements.
Universal Citation: MO Rev Stat § 293.120 (2019)
Effective 28 Aug 1959
293.120. Air safety requirements. — Air in which men work or travel in mines shall be improved when:
(1) It contains less than nineteen and five-tenths percent oxygen;
(2) It contains more than one-hundredth percent carbon monoxide;
(3) It contains more than five-tenths percent carbon dioxide;
(4) It contains more than one percent methane; or
(5) Is contaminated with dust or with noxious or poisonous gases in excess of accepted limits as established by the director of the division of mine inspection.
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(L. 1959 S.B. 188 § 13)
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