Technician to close valve, in order to make the above Tie-in of the maintenance department. After you have finished, close the valve. He walked down the stairs (and colleagues prepared), which placed at sides, you don't lose heart, maintenance. While stepping down from top of maintenance Blemishes of any maintenance collapsed down, the technician came inside the room and was injured on the hand-sewing needles is wound 6 non-stop.
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