Hochschild Mining: Production Report for the 12 months ended 31 December 2018 – San Jose´s contribution

Ignacio Bustamante, Chief Executive Officer of Hochschild Mining announced 2018 results: «Hochschild has delivered a production increase in 2018 with output growing for the sixth consecutive year, again driven by a record performance from our Inmaculada mine and increased output from Pallancata. Our costs for 2018 are expected to be in line with positively revised expectations and we maintain a robust financial position with a further US$50 million of medium-term debt repaid in December.”

“We have had a very successful year of brownfield exploration at Inmaculada with over 1.3 million gold equivalent ounces of inferred resources added from structures close to the current mining infrastructure. Geological prospects at Pallancata and San Jose remain strong and we can look forward to an exciting 2019 programme which has good potential to add significant low cost ounces to our resource base.»


Operational highlights

  • Record full year attributable production in 2018

o  260,436 ounces of gold

o  19.7 million ounces of silver

o  526,650 gold equivalent ounces

o  39.0 million silver equivalent ounces (versus revised target of 38.5 million silver equivalent ounces)


Exploration highlights

Also, among the highlights of the exploration, Hochschild Mining informed that brownfield exploration programs will continue in San José in the first quarter of 2019.


Operational highlights of Mina San José


  Q4 2018 Q3 2018 Q4 2017 12 months
12 months 2017
Tons treated 146,992 144,852 144,732 556,185 532,676
Average grade silver (g/t)
401 376 465 397 436
Average grade gold (g/t)
6.19 5.93 7.26 6.20 6.71
Silver – Production (Moz) 1,666 1,517 1,877 6,165 6,448
Gold – Production (Thousands of Ounces) 25.72 24.02 29,65 96.59 100.47


Operation San José, located in Santa Cruz province, presented a robust last quarter, with planned increases in mineral grades, directly impacting the production of 1.7 Moz of silver and 25.719 ounces of gold (3.6 Moz of silver equivalents) The total production of 2018 was 13.3 Moz of silver equivalent, 4% lower than the 2017 figures, due to lower ore grades partially offset by a small increase in tonnage.

In the exploratory area, 2,575 meters were drilled in San José during the last quarter of 2018 to evaluate potential resources in Aguas Vivas, in order to evaluate the polymetallic structure, with greater drilling tasks that will continue in the first quarter of 2019. The most Highlights include: The San Jose operation in Argentina delivered a strong final quarter with planned increases in grade resulting in production of 1.7 million ounces of silver and 25,719 ounces of gold (3.6 million silver equivalent ounces). The overall production results for 2018 was 13.3 million silver equivalent ounces, a 4% reduction versus 2017 due to lower grades partially offset by a small increase in tonnage.

At San Jose, 2,575 metres were drilled in Q4 for potential resources in Aguas Vivas to test the polymetallic structure with further drilling continuing into the first quarter of 2019.


     Vein                                                      Results
Aguas Vivas SJD-1851: 2.7m @ 0.3g/t Au, 44g/t Ag, 1.2% Cu, 4.6% Pb & 6.4% Zn

SJD-1853: 0.7m @ 0.1g/t Au, 149g/t Ag, 2.6% Cu, 8.2% Pb & 6.4% Zn

SJD-1854: 0.8m @ 0.2g/t Au, 64g/t Ag, 1.2% Cu, 1.0% Pb & 0.3% Zn

SJD-1855: 0.5m @ 4.0g/t Au, 5g/t Ag, 0.7% Pb & 2.4% Zn

SJD-1857: 0.6m @ 1.6g/t Au, 18g/t Ag, 0.1% Cu, 2.7% Pb & 2.2% Zn

SJD-1858: 0.6m @ 0.4g/t Au, 48g/t Ag, 1.0% Cu, 0.2% Pb & 0.1% Zn

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