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A new safety manager who has been working for 3 weeks appears! Today's safety man who is like a fool is working hard to introduce the work site... but he got lost? What on earth happened? #yksteel #daehansteel #iamsafetymanthree #gupyeongplant #safetystrategyteam #safetymanager #office #safety #newcomer #senior #heavyequipment #airconditioner #habit #culture