 |
 Awarded
the “Prize for export of
five million dollars” by
the President of Korea |
|
|
 |
Completed
the expansion program at
the Onsan Refinery with
a capacity of 350,000 tonnes
per annum |
|
|
 |
Incorporated
Sun Metals Corp. in Australia |
|
|
 |
Acquired
Big River Zinc Corporation
in Illinois, U.S.A with
a capacity of 80,000 tonnes
per annum of zinc |
|
|
 |
Completed
construction of TSL plant
for zinc fumer |
|
|
 |
Began
direct leaching of zinc
sulfide concentrate and
expanded zinc production
to 215,000 tonnes per annum |
|
|
 |
Started
coal burning power plant
at Onsan with a 43MW capacity |
|
|
 |
Completed
construction of QSL lead
smelter and expanded the
capacity of Onsan lead refinery
to 135,000 tonnes per annum |
|
|
 |
1991.12
Completed construction of
Onsan refinery private port |
|
|
 |
Listed
on Korea Stock Exchange |
