▁year , ▁making ▁it ▁one ▁of ▁the ▁world ' s ▁biggest ▁z inc ▁sm el ters . ▁▁ 2 0 0 0 ▁Har j aval ta ' s ▁nick el ▁operations ▁are ▁sold . ▁Ma url iden , ▁the ▁ 2 8 th ▁mine ▁in ▁the ▁Bol iden ▁Area , ▁opens . ▁The ▁new ▁R ön n sk är ▁complex ▁is ▁inaugur ated . ▁▁ 1 9 9 8 ▁The ▁Spanish ▁Los ▁Fra iles ▁mine ▁clos es ▁as ▁a ▁result ▁of ▁the ▁tail ings ▁dam ▁failure , ▁causing ▁extensive ▁damage ▁in ▁the ▁environment , ▁near ▁Do ñ ana ▁National ▁Park . ▁The ▁R ön n sk är ▁+ 2 0 0 ▁expansion ▁– ▁an ▁invest ment ▁of ▁SE K ▁ 1 . 9 ▁billion ▁– ▁is ▁approved . ▁The ▁direct ▁le aching ▁method ▁is ▁implemented ▁at ▁K ok k ola . ▁▁ 1 9 9 7 ▁Bol iden ▁establish es ▁its ▁head ▁office ▁in ▁Toronto . ▁The ▁share ▁is ▁listed ▁on ▁the ▁Toronto ▁and ▁Montreal ▁stock ▁ex changes . ▁▁ 1 9 9 5 ▁Har j aval ta ▁is ▁expanded , ▁increasing ▁co pper ▁production ▁by ▁ 6 0 ▁per ▁cent ▁and ▁nick el ▁production ▁by ▁ 2 0 0 ▁per ▁cent . ▁▁ 1 9 9 3 ▁The ▁“ co pper ▁sh utt le ” ▁train ▁begins ▁transport ing ▁co pper ▁c ath odes ▁from ▁Sk elle fte ham n ▁to ▁Ele kt ro ko pp ar ▁in ▁Hels ing borg . ▁▁ 1 9 9 0 ▁The ▁concentr ator ▁at ▁Bol