- CEO
- Atsushi Kawadai
- Sector
- Non-energy minerals
- Industry
- Other metals/Minerals
- Address
- Lima Peru
- IPO Date
- Sep 10, 1982
- Business
- Compañía Minera Santa Luisa S.A. is a Peru-based medium-scale mining enterprise engaged in the exploration, extraction, beneficiation, and commercialization of polymetallic mineral deposits. The company specializes in the production of high-grade non-ferrous metal concentrates; zinc concentrates with associated silver content; lead concentrates containing silver and minor byproduct metals; and copper concentrates produced through selective differential froth flotation processes. Operating primarily through underground mining methods, Santa Luisa carries out core mining and concentration activities at its flagship Huanzalá mining unit and the satellite Pallca mining unit, both situated in the Province of Bolognesi, Department of Ancash, in the central Peruvian Andes. Extracted ore from the Pallca deposit is transported to and treated at Huanzalá's centralized flotation processing plant, yielding bulk and selective concentrates destined for international commodity markets, smelters, and refiners.
The company organizes its business activities into two primary operational segments: Mining Operations, which oversees underground mine development, drilling and blasting, stope extraction, and mineral haulage; and Metallurgical Processing and Commercialization, which manages crushing, grinding, selective flotation, thickening, filtration, tailings storage facilities, and concentrate dispatch logistics. In addition to commercial mineral concentrate production, Santa Luisa provides internal metallurgical testing and chemical assaying services; geological exploration, diamond drilling, and mineral reserve modeling across its mining concessions; and environmental monitoring, mine water treatment, and progressive mine closure rehabilitation operations across its operational footprint.
In recent developments, Compañía Minera Santa Luisa S.A. has executed strategic infrastructure modernizations and permitting milestones across its operations to extend operational continuity, optimize cost efficiency, and enhance workplace safety. The company secured regulatory approval for its Second Sustaining Technical Report (Segundo ITS) for the Huanzalá mining unit from the National Environmental Certification Service for Sustainable Investments (Senace), authorizing twenty operational and environmental upgrades, including the construction of a new metallurgical laboratory, expansion of sludge drying beds, implementation of a concrete plant sedimentation system, upgraded equipment maintenance facilities, and expanded sanitary landfill capacity. Concurrently, the company received approval for its Third ITS at the Pallca unit, enabling the development of the VR-250 ventilation raise in the Berlín sector and expanding worker accommodation infrastructure. In exploration, Santa Luisa has progressed permitting for the fourth modification of the Semi-Detailed Environmental Impact Study (4MEIA-SD) for its Atalaya polymetallic exploration project in Huallanca. Operationally, the firm has integrated mechanized underground ground-support systems, deploying robotic concrete distributors and specialized shotcrete thickness measurement equipment, while advancing engineering studies for electrical grid interconnection to Peru's National Interconnected Electric System (SEIN) to improve power reliability and energy efficiency.
Founded in 1964, Compañía Minera Santa Luisa S.A. is headquartered in San Isidro, Lima, Peru, and operates as a consolidated subsidiary of Japan-based Mitsui Mining & Smelting Co., Ltd. (Mitsui Kinzoku), which holds the controlling equity interest. The company's investment shares are publicly listed on the Lima Stock Exchange (Bolsa de Valores de Lima) under the ticker symbol LUISAI1.