All accessible parts of an abandoned portion of a mine shall be carefully examined by the mine foreman, assistant mine foreman or mine examiner at least once a week, and all danger found existing therein shall be immediately removed. A report of said examination shall be recorded in a book kept at the colliery for that purpose on the day the examination is made and shall be signed by the person making the same and countersigned by the mine foreman within a period of one week.
52 P.S. § 70-226