Mitsubishi Materials Corporation

Our production plans for the 1st half of the fiscal year ending March 31, 2027, are as follows.

Period

April 2026 to September 2026

Refined Copper

29,236 metric tons per month

Refined Lead

2,274 metric tons per month

Refined Gold

1,175 kg per month

Refined Silver

17,917 kg per month

(Reference)

October 2025 to March 2026

(previous 6 months plans)

April 2025 to September 2025

(year-on-year results)

Refined Copper

30,701 metric tons per month

30,303 metric tons per month

Refined Lead

2,333 metric tons per month

2,163 metric tons per month

Refined Gold

1,642 kg per month

1,561 kg per month

Refined Silver

18,250 kg per month

17,924 kg per month

Comparison with results for the same period of the previous year
 

  • As for copper, the copper concentrate processing volume at Naoshima Smelter & Refinery is scheduled to increase compared with the same period of the previous year. On the other hand, production at Onahama Smelter & Refinery is expected to decrease, as it plans to scale back its copper concentrate processing volume. As a result, total production is planned to decrease compared with the same period of the previous year.
  • As for gold, production is planned to decrease, mainly due to a reduction in the amount of anode slime generated during copper electrorefining at Onahama Smelter & Refinery. On the other hand, despite the decrease in anode slime, silver production is expected to remain at approximately the same level as in the same period of the previous year, owing to the composition of the raw materials.

End

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