Mina de Miguel Burnier

Assessment scope

The scope included the extraction of iron in open pit mines, primary treatment facilities (UTM I and II), decommissioned Alemães tailings dam, waste and dry tailings storage facilities PDE Vigia Unificada and PDR Vigia, decommissioned waste dump PDE Bocaina, stormwater management infrastructure, co-product storage areas, fuel storage and fueling system, potable water treatment plant, wastewater treatment plants, security guard house, warehouses, changing rooms, dining room, administrative office building, health clinic, maintenance facilities, operations building, restaurant and laboratory.

Not included in scope: the Soledade reservoir and associated infrastructure and electrical substation, and the planned UTM II expansion, including the proposed pipeline from UTM II to the Gerdau Açominas’ steel plant in Ouro Branco.

The audit firm determined that the following chapters of the IRMA Standard were not relevant to this audit:

• Chapter 2.2—Free, Prior and Informed Consent
• Chapter 2.4—Resettlement
• Chapter 3.6—Artisanal and Small-Scale Mining
• Chapter 4.7—Cyanide Management
• Chapter 4.8—Mercury Management