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| Jun. 2002. |
Combined with Korean Coal Mine Union |
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| Dec. 1984. |
Moved the office to Coal Building, #80-6 Susong-dong Jongro-gu Seoul, Korea |
| Jun. 1982. |
Moved the office to Taehwa Building #194-27 Insa-dong Jongro-gu Seoul, Korea |
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| Sep. 1980. |
Combined with Korea Coal Industry Association and changed name to 「Korean Coal Association」 |
| Feb. 1980. |
Moved office to #80-6 Susong-dong Jongro-gu Seoul Korea (formerly Sukmyung Girls’ High School) |
| Dec. 1976. |
Moved office to Kumpung Building, #48-27 Jungdong-2ga Jung-gu Seoul, Korea |
| May 1973. |
Moved office to Saehan Building, #27-1 Supyo-dong Jung-gu Seoul, Korea |
| Sep. 1960. |
Moved office to Jangsaeng Building, #22-5 Janggyo-dong Jung-gu Seoul, Korea |
| Mar. 1953. |
Opened the office in Jangan Building in Seoul by holding rebuilding conference after recovering Seoul during the Korean War |
| Aug. 1949. |
Ko, In-Moon, the CEO of Yesan Coal Mine, takes office as the 1st Chairman |
| 06. July, 1949. |
Approval for establishment from Ministry of Commerce, Employment & Trade as 「Korean Coal Mine Association」 |
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