Public Law 40.
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/statutes-at-large/vol-55/public-law-40·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
*Coal mines, inspections, etc.* AN ACT Relating to certain inspections and investigations in coal mines for the purpose of obtaining information relating to health and safety conditions, accidents, and occupational diseases therein, and for other purposes May 7, 1941 177 50