Ann: Gubong Project - Bluebird Merchant Ventures RNS Released, page-28

BMV/SAU signed an agreement to develop and reopen Kochang.

https://bluebirdmv.com/2018/02/12/bluebird-takes-second-south-korean-gold-silver-mine/

...Charles Barclay, COO, commented:
“The Kochang mine has many benefits from a mining perspective. Accessing new ore can be achieved within six months of a decision to mine. The vertical ore bodies make for cheaper mining and development costs. The size of the old mine is smaller than Gubong and it is highly likely that Kochang could come into production ahead of Gubong.”
sounds good to me.