← Peru mining record · All Peru sanctions
MINERA LA ZANJA S.R.L.
Peru mining record: safety sanctions, environmental fines and fatal accidents
RUC (tax ID) 20507975977· On record from Sep 18, 2010 to Oct 24, 2025
2
sanction resolutions
ⓘ
A resolution (resolución) is OSINERGMIN's formal written decision closing one sanction case: an order from the regulator, not a court judgment. A single resolution can fine several infractions at once, and it can be appealed to TASTEM, the agency's own appeals tribunal.47,325
in fines (S/)
ⓘ
S/ is the Peruvian sol, Peru's currency. The gray dollar figures are approximate conversions at S/ 3.35 per US$1 (August 2026).8
published resolutions 2001-2019
4
OEFA environmental cases
51.57
in OEFA fines (UIT)
ⓘ
The UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles.1
deaths 2002-2021 (MINEM)
OSINERGMIN safety fines, 2020-2026, obtained by public-records request
From Sep 29, 2022 to Oct 24, 2025 · S/ 47,325 ≈$14K
Resolution 4052-2025
S/ 25,199 ≈$7,522
Oct 24, 2025 · DIVISIÓN DE SUPERVISIÓN DE GRAN MINERÍA
Case file: 202500082178
Sanctioned party as written: MINERA LA ZANJA S.R.L.
Obligation (OSINERGMIN's label)
ⓘThe legal obligation OSINERGMIN found breached, in the agency's own Spanish wording. |
State (OSINERGMIN)
ⓘOSINERGMIN's own per-infraction state, kept verbatim in Spanish: FUNDADA (upheld), FUNDADA EN PARTE (upheld in part), INFUNDADA (dismissed), ARCHIVADA (closed), NULIDAD (annulled), EMITIDA (issued). |
UIT
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
Fines (S/)
ⓘS/ is the Peruvian sol, Peru's currency. The gray dollar figures are approximate conversions at S/ 3.35 per US$1 (August 2026). |
% paid
ⓘThe share of the fine OSINERGMIN reports as paid for this infraction. Whether it reflects collection to date has not been confirmed with the agency. |
|---|---|---|---|---|
| 2.1.3 Diseño y operación de depósitos de desmonte. | EMITIDA | 2.36 | 12,626 | 100% |
| 2.1.3 Diseño y operación de depósitos de desmonte. | EMITIDA | 2.35 | 12,573 | 100% |
Resolution 2185-2022
S/ 22,126 ≈$6,605
Sep 29, 2022 · DIVISIÓN DE SUPERVISIÓN DE GRAN MINERÍA
Case file: 202200050332
Sanctioned party as written: MINERA LA ZANJA S.R.L.
Obligation (OSINERGMIN's label)
ⓘThe legal obligation OSINERGMIN found breached, in the agency's own Spanish wording. |
State (OSINERGMIN)
ⓘOSINERGMIN's own per-infraction state, kept verbatim in Spanish: FUNDADA (upheld), FUNDADA EN PARTE (upheld in part), INFUNDADA (dismissed), ARCHIVADA (closed), NULIDAD (annulled), EMITIDA (issued). |
UIT
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
Fines (S/)
ⓘS/ is the Peruvian sol, Peru's currency. The gray dollar figures are approximate conversions at S/ 3.35 per US$1 (August 2026). |
% paid
ⓘThe share of the fine OSINERGMIN reports as paid for this infraction. Whether it reflects collection to date has not been confirmed with the agency. |
|---|---|---|---|---|
| 6.1.2 Obligaciones del supervisor | EMITIDA | 4.81 | 22,126 | 100% |
OSINERGMIN published sanctions, 2001-2019
| Year | Resolution
ⓘA resolution (resolución) is OSINERGMIN's formal written decision closing one sanction case: an order from the regulator, not a court judgment. A single resolution can fine several infractions at once, and it can be appealed to TASTEM, the agency's own appeals tribunal. |
Sanctioned party as written | Type | TASTEM ruling |
|---|---|---|---|---|
| Nov 20, 2017 | 2059-2017-OS-GSM hidden on the agency's page | MINERA LA ZANJA S.R.L. | 472-2018-OS/TASTEM-S2 | |
| Aug 17, 2017 | 1223-2017-OS-GSM | MINERA LA ZANJA S.R.L. | ||
| Sep 13, 2016 | 2630-2016-OS-GSM hidden on the agency's page | MINERA LA ZANJA S.R.L. | 043-2018-OS-TASTEM-S2 | |
| Aug 3, 2016 | 2238-2016-OS-GSM | MINERA LA ZANJA S.R.L. | ||
| May 18, 2016 | 1512-2016-OS-GSM | MINERA LA ZANJA S.R.L. | ||
| Aug 12, 2015 | 1905-2015-OS-GFM hidden on the agency's page | MINERA LA ZANJA S.R.L. | 017-2016-OS/TASTEM-S2 | |
| May 14, 2014 | Resolution (PDF) hidden on the agency's page | MINERA LA ZANJA S.R.L. | ||
| Jun 1, 2011 | Resolution (PDF) | MINERA LA ZANJA S.R.L. |
The regulator's own list, frozen in December 2019. It publishes no fine amount: the resolution PDF is the record. A row naming a titleholder and a contractor together is shown as written.
OEFA environmental sanctions, 2017-2023
1444-2023-OEFA/DFAI
27.66 UIT
Jun 28, 2023 · Unit: La Zanja · Cajamarca
Case: 0391-2020-OEFA/DFAI/PAS
| Infraction (OEFA's classification) | Fine (UIT)
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
|---|---|
|
Monitoreos ambientales
El administrado incumplió lo establecido en su instrumento de gestión ambiental, debido a que implementó los siguientes componentes que no estaban contemplados: (xv) Camino de acceso principal; (xvi) Rampa de estabilización tramo 1; (xvii) Rampa de estabilización tramo 2; (xviii) Poza de Lodos 16A; (xix) Poza de Lodos 16B; (xx) Poza de Lodos 18A; (xxi) Poza 18B; (xxii) Sub-Estación Eléctrica Poza 16; (xxiii) Sub-Estación Eléctrica Poza 18A; (xxiv) Poste Eléctrico 1; (xxv) Poste Eléctrico 2; (xxvi) Poste Eléctrico 3; (xxvii) Poste Eléctrico 4; (xxviii) Poza de Monitoreo 1; y, Poza de Monitoreo 2.
|
13.83 |
|
Actividades, componentes y/o equipos no declarados
El administrado incumplió lo establecido en su instrumento de gestión ambiental, debido a realizó modificaciones de los siguientes componentes: (vi) Tajo San Pedro Sur – Sector Macarena; (vii) Poza 16; (viii) Poza 16C; (ix) Poza 18A; (x) Back Fill N°3 San Pedro Sur (BF3SPS); y, Poza BF3SPS.
|
13.83 |
0307-2022-OEFA/DFAI
23.91 UIT
Mar 30, 2022 · Unit: La Zanja · Cajamarca
Case: 1092-2021-OEFA/DFAI/PAS
| Infraction (OEFA's classification) | Fine (UIT)
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
|---|---|
|
Compromisos y/o normas ambientales simples
El administrado no acreditó la operación continua de la Oficina de Información Permanente San Miguel durante los meses de julio a diciembre de 2018, y la Oficina de Información Permanente Bravo 1 durante diciembre de 2018
|
23.91 |
1764-2019-OEFA/DFAI
Oct 30, 2019 · Unit: La Zanja · Cajamarca
Case: 0794-2019-OEFA/DFAI/PAS
Appeal: APELACIÓN, resolved by 0003-2020-OEFA/TFA-SE on Jan 9, 2020
| Infraction (OEFA's classification) | Fine (UIT)
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
|---|---|
|
Excesos de Límites Máximos Permisibles y/o ECAS
El administrado excedió los Límites Máximos Permisibles, respecto del parámetro Sólidos Totales en Suspensión (STS) en el efluente del punto de control V-03.
|
2689-2018-OEFA/DFAI
Oct 31, 2018 · Unit: La Zanja · Cajamarca
Case: 0357-2016-OEFA/DFSAI/PAS
Appeal: APELACIÓN, resolved by 0150-2019-OEFA/TFA-SMEPIM on Mar 20, 2019
| Infraction (OEFA's classification) | Fine (UIT)
ⓘThe UIT (Unidad Impositiva Tributaria) is Peru's tax reference unit, revalued each year. OSINERGMIN states every fine in UIT as well as in soles. |
|---|---|
|
Manejo de efluentes
El administrado descarga efluentes provenientes de las pozas de sedimentación que captan las aguas de escorrentía del talud de la vía de acceso denominada Haul road, en un punto no autorizado en su instrumento de gestión ambiental.
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|
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Excesos de Límites Máximos Permisibles y/o ECAS
El administrado superó los límites máximos permisibles en los parámetros pH y cobre (Cu) en el efluente proveniente de las pozas de sedimentación las cuales captan las aguas de escorrentía del talud de la vía de acceso denominada Haul Road.
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From OEFA's environmental infractions register (RUIAS), mining subsector, snapshot cut April 30, 2024. Fines are in UIT, Peru's yearly-revalued tax unit, as OEFA states them; a case can carry several infraction lines and a corrective measure instead of a fine.
Fatal accidents, 2002-2021 (MINEM)
| Date of death | Mining unit | Accident type (as classified) | Place | Category |
|---|---|---|---|---|
| Sep 18, 2010 | LA ZANJA | CHOQUES CONTRA O ATRAPADO EN O GOLPES POR OPERACIÓN DE MAQUINARIA | CALQUIS, SAN MIGUEL, CAJAMARCA | Gran y Mediana Minería |
One row per death from the Ministry of Energy and Mines' open-data list, naming the titleholder and mining unit. The file has no 2019 rows and only 10 for 2017-2018, an upstream gap; deaths after June 2021 are not in it.