Cajamarquilla Unit

• ISO 9001:2000 – Quality Management System. Scope: pure zinc production and zinc alloys.

English version

• ISO 14001:2004 – Environmental Management System. Scope: activities, processes and services related to the production of zinc and zinc alloys, including byproducts and water treatment facilities.

English version

Juiz de Fora Unit

• ISO 14001:2004 – Environmental Management System. Scope: production of high standard zinc, zinc alloy, zinc and lead dust, sulphuric acid, sulphur dioxide, copper sulphate and silver and cadmium concentrates, as well as the plant and barrage facilities.

English version

• ISO 9001:2008 – Quality Management System. Scope: production and commercialization of zinc, zinc dust, sulphuric acid, sulphur dioxide, copper sulphate, silver concentrate and cadmium briquettes.

Portuguese version

• OHSAS 18001:2007 – Occupational Safety and Health Management System (English version): production of high standard zinc, zinc alloy, sulphuric acid, sulphur dioxide, copper sulphate, copper and cadmium concentrate, plant and barrage facilities. Production, lab, management, human resources, maintenance, restaurant, barrage, delivery, warehouse and third parties.

English version

Morro Agudo Unit

• ISO 9001:2000 – Quality Management System. Scope: mineral mining and processing for the production of lead sulfide, zinc and limestone sulfide concentrate.

Portuguese version

• OHSAS 18001:1999 – Occupational Safety and Health Management System. Scope: mineral mining and processing for the production of lead sulfide, zinc and limestone sulfide concentrate.

Portuguese version

Três Marias Unit

• ISO 14001:2004 – Environmental Management System. Scope: designed for the environmental risk management derived from the production of high standard zinc, zinc alloy and zinc oxide, factory and barrage facilities.

English version

• ISO 9001:2008 – Quality Management System. Scope: Processing of silicate and sulphide concentrates with metal zinc (SHG) production, alloys, zinc oxide and sulphuric acid.

English version

• OHSAS 18001:2007 – Occupational Safety and Health Management System. Scope: risk management in the production of zinc dust, alloys and zinc oxide, in addition to the factory and barrage facilities.

English version

Vazante Unit

• ISO 14001:2004 – Environmental Management System. Scope: Open underground mining, mineral processing for the production of zinc silicate concentrate, utilities in the plant and barrage.

Portuguese version

• ISO 9001:2000 – Quality Management System. Scope: Open underground mining, mineral processing for the production of zinc silicate concentrate, utilities in the plant and barrage.

Portuguese version