Our purpose
SUNARP 1992 · Formalized 1998
Founded in 1987 by organized artisanal miners in Santa Filomena, we now bring 39 years of history and 167 active partners as a mechanized mid-scale underground mine exporting ethical gold directly.
Corporate purpose
“We improve lives by transforming minerals into well-being”
Minera SOTRAMI S.A. (Sociedad de Trabajadores Mineros S.A.) — Mining with a human face.
Discover our mining model
To develop and operate with the highest efficiency, prioritizing safety and quality. We commit to implementing innovative technologies and practices that not only enhance shareholder value, but also ensure the long-term viability of our operations. Respecting our environment, we foster a culture of health and safety that drives occupational and community development, setting the benchmark for sustainable and prosperous gold mining.
To be recognized for high productivity and quality, establishing innovative and sustainable mining practices that not only generate economic value, but also standardize excellence in safety, health, and environmental stewardship. We aspire for mining and sustainability to coexist for the benefit of society, securing long-term prosperity through our mineral reserves.
Corporate culture
01
We act with integrity, consistency, and verifiable accuracy across every weighing, assay grade, and commitment.
02
We continuously elevate our underground, metallurgical, and corporate standards toward international benchmarks.
03
We uphold human dignity and the fundamental rights of our workers, shareholder-partners, and Andean communities.
04
Trackless mechanization, Pique Salvador hoisting, 3D laser scanning, and SAP S/4HANA supporting safety and environmental care.
05
Audited traceability from narrow underground veins and formalized mineral sourcing to accredited refineries in Switzerland.
06
True to our 1987 associative roots, we transform ethical gold into community infrastructure and shared progress.
Where we operate
The mine and the plant, 10 km apart, are linked to Yauca (Arequipa) by a 60 km road. Our corporate offices are in La Molina, Lima.
Corporate Administrative Headquarters (Lima)
Av. Separadora Industrial No. 147, Urb. Monterrico, La Molina, Lima – Peru
Corporate governance, finance, international gold exports, and SAP S/4HANA operations.
View on mapSanta Filomena Mining Unit — Underground Mine
Santa Filomena Town, Sancos District, Lucanas Province, Ayacucho
Narrow-vein underground gold mining (Zona 23 and Santa Rosa zones), Pique Salvador shaft (550 m), and 60 km road link from Yauca.
Santa Filomena II Processing Plant & Leach Pad
Santa Rosa Ravine (10 km from the underground mine), Sancos, Lucanas, Ayacucho
Crushing, wet grinding, agitated tank leaching (94.06% recovery), low-grade leach pad, desorption, doré smelting, and lined Tailings Facility B.
Corporate governance
Governed by the General Shareholders’ Meeting, an elected Board of Directors, and Executive Management.
Chairwoman of the Board — Minera SOTRAMI S.A.
Lizbeth Huaman Chauca
Audited results 2023
1964 – 2025
From artisanal workings to a mechanized underground operation with a 550-meter shaft, international ethical certifications, and cloud management.
Operations of a former mining company cease in the Santa Filomena area, leaving historic underground galleries.
Artisanal miners begin subsistence gold extraction in the Andean narrow-vein deposit of Sancos, Lucanas.
Creation of Sociedad de Trabajadores Mineros by organized miners committed to building a dignified, formal operation.
Official public registry inscription (SUNARP) alongside the consolidation of the Santa Filomena community.
Completion of a pioneering mining formalization process in Peru paired with the eradication of child labor.
Official approval of SOTRAMI’s first Environmental Impact Assessment under Peruvian environmental law.
Acquisition of the Santa Filomena mineral processing concession, integrating mining and metallurgy.
Environmental permit upgraded to EIA-sd to expand mineral processing capacity from 10 to 120 t/day.
2018 certified mineral reserve estimation and construction permit for lined Tailings Facility B.
Achievement of Responsible Jewellery Council (RJC) and Cyanide Code (ICMI) certifications, start of the trackless ramp, and Lima property acquisition.
Start of operations at Tailings Facility B operating in closed loop with the Barren Solution Pond.
Fairtrade International recertification audited by FLOCERT and commissioning of the Water Pumping Project.
March 2023 commissioning of the 550 m vertical shaft and headframe (2.50 × 3.50 m section, Loading Pocket, and 500 HP hoist).
Underground mechanization with Jumbo and Scooptram equipment, new worker camps, 94.06% recovery, and 1st Star from Peru Carbon Footprint – MINAM.
December 2025 rollout of SAP S/4HANA Public Cloud with Omnia Solution S.A.C. under Chairwoman Lizbeth Huaman Chauca.
Governance & certifications
RJC
2019 · RJC · Auditoría SGS
Global standard for business ethics, human rights, supply-chain due diligence, and environmental stewardship in fine jewelry and watchmaking.
ICMI
2019 · ICMI
Safe transport, storage, closed-loop metallurgical handling, and continuous WAD cyanide monitoring to protect workers and ecosystems.
FAIRTRADE
2021 (Recertificación) · FLOCERT / Fairtrade Max Havelaar
Physical traceability of responsible gold, zero child labor, and Fairtrade Premium generation (USD 1,541,989.82 in 2023) for social investment.
SBGA
Activo · SBGA · Argor-Heraeus & Valcambi
Swiss direct-traceability alliance co-financing 50/50 a USD 2,933,603 portfolio in worker housing, laundry, potable water plants, and 22.9 kV grid power.
MINAM ★
2023 · Ministerio del Ambiente del Perú (MINAM) · Asistencia Bureau Veritas
Official GHG Inventory Measurement recognition (2022 baseline, issued Dec 31, 2023) covering Lima HQ, Underground Mine, and Processing Plant.
