| Chronology | ||
|---|---|---|
| December | The company was founded. | |
| April | Test operations were initiated. | |
| October | Commercial operation started. | |
| April | Commercial operation at the monthly production rate of
6,000MT electrolytic copper started. | |
| March | Commercial operation at the monthly production rate of
10,000MT electrolytic copper started. | |
| March | A second double-contact sulfuric acid plant was put into operation. | |
| January | Expansion work for production up to 20,000MT of
electrolytic copper per month began. The No.2 reverberatory furnace , gypsum plant and the No.3 tank house were put into operation. | |
| June | Use of waste tires as substitute fuel began. | |
| August | Fuel of reverberatory furnaces was converted to coal. | |
| November | Incineration of waste oil started. | |
| January | Oxygen plant was put into operation. | |
| November | Flash dryer for concentrate was installed. | |
| December | Use of Shredder residue as substitute fuel started. | |
| May | Neutralized gypsum plant was put into operation. | |
| May | Acquired ISO 14001 certification. | |
| November | New oxygen plant was put into operation. | |
| April | Charging rate of shredder residue was set at 10,000MT per month. | |
| October | Awarded the Minister of METI prize for “Reduce , Reuse and Recycle(3R)”. | |
| April | Charging rate of shredder residue was set at 12,000MT per month. | |
| December | S furnace was put into operation. | |