The Mine Inspector of said mines in addition to other duties and powers herein conferred, shall be and he is hereby authorized, empowered and directed to examine carefully all places and conditions where employees work in said mines. Where said Mine Inspector finds a condition existing in any of said mines either on the surface or underground, which makes the said mine a dangerous, unsafe or unusually unhealthful place for employees to work he shall, subject to the right of review hereinafter provided, serve notice in writing on the operator of said mine so affected, specifying in detail the things to be done to correct such condition making said mine a dangerous, unsafe or unusually unhealthful place for employees to work. This notice shall specify the time in which such required acts shall be done by the operator of said mine. A failure or refusal of said operator to correct the condition existing in said mine as set forth in the written notice of said Mine Inspector or as modified on review in accordance with the further provisions of this act¹ shall be a misdemeanor and punished as hereinafter provided.