[SMM Announcement] Notice on the Adjustment of Zinc Concentrate Production Indicators for Romina and Paragsha

Dear Users,

To standardise the statistical scope of mine-level production data and improve consistency with mining companies’ official reporting practices, SMM will adjust the zinc concentrate production indicators related to Romina and Paragsha in Peru under the following two datasets: SMM Global Zinc Concentrate Production by Mine and SMM: Global Zinc Concentrate Production by Mine: Quarterly.

Starting from Q2 2026, SMM will discontinue separate updates to the following quarterly indicator:

Peru – Romina

Starting from 2026, SMM will discontinue separate updates to the following annual indicators:

Paragsha

Paragsha-estimate

Romina

Romina-estimate

In line with the operational structure of the relevant projects and the companies’ reporting scope, production associated with Romina will be included under the Alpamarca indicator, while production associated with the Paragsha processing plant will be included under the Cerro de Pasco indicator. Going forward, users may refer to the quarterly and annual zinc concentrate production data for Alpamarca and Cerro de Pasco, respectively.

This adjustment is intended to avoid potential double counting or inconsistencies arising from differences in statistical boundaries, and to further improve the consistency and accuracy of SMM’s global mine-level zinc concentrate production data.

Thank you for your understanding and continued interest in and support for SMM data products.

For any enquiries, please contact:

Yueang He         Pb & Zn Analyst – SMM London Office

Email: yueanghe@smm.cn

Tel./WhatsApp: +44 7522 173725