Holiday Journal

保寧, 石炭博物館, 석탄박물관, 보령석탄박물관, 석탄, 박물관, 폐갱구, 연탄, 광부, 암석시료, 지하갱도, 폭약, 광차, 인차, 송풍기, 수직갱도, coalmuseum, Boryungcoalmuseum, coal, museum, closedminehead, briquette, mineworker, cylindricalrocksample, undergroundtunnel, explosive, hutch, mancage, ventilator, mineshaft