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Yamana Gold Announces First Gold and Silver Production at Cerro Moro and Provides Details on Mine Exploration Program

by ahnationtalk on May 16, 2018113 Views

TORONTO, May 16, 2018  — YAMANA GOLD INC. (TSX:YRI) (NYSE:AUY) (“Yamana” or “the Company”) is pleased to announce the first pour of gold and silver doré at Cerro Moro which occurred on May 15, 2018.  The Company is also pleased to provide several other updates relating to Cerro Moro including an update on exploration.  The Cerro Moro mine is located in Santa Cruz province, Argentina and is a high-grade gold and silver operation sourcing ore from a combination of underground and open pit mining.

The production ramp up of Cerro Moro continues to track according to plan with commercial production expected in the second quarter of 2018.


The following table presents 2018 to 2020 production expectations for Cerro Moro, which are unchanged from guidance provided earlier in 2018.

Production (ounces) 2017 Actual 2018 Guidance 2019 Guidance 2020
Gold 85,000 125,000 130,000
Silver 3,750,000 6,000,000 8,300,000

The Company expects most of Cerro Moro’s 2018 production in the second half of the year.  With the ramp up of production underway, the Company is focusing on ensuring mill throughput rates reach nameplate capacity of 1,000 tonnes per day, and that grades and recoveries reconcile to plan.  As of current date, ramp up of mining and milling is well on track, with the major equipment performing to design during usual performance tests and commencement of operations.  While the ramp up remains the primary focus, efforts are already shifting to optimizing the operation and, in particular, ensuring that operating costs reach guidance levels.

The stockpile at Cerro Moro has continued to increase since year-end 2017 and through the first quarter of 2018.  As at May 6, 2018, the stockpile was estimated at 42,300 tonnes at 21.5 grams per tonne (“g/t”) gold and 995 g/t silver, providing added flexibility to the mine plan for 2018.  The operation has reached the planned six weeks of stockpiled ore, ahead of schedule which was originally the end of this quarter, and the grades are higher than planned.

The following table presents 2018 cost expectations for Cerro Moro provided earlier in 2018.

Total cost of sales
per ounce sold
Co-product cash
costs(1) per unit
Co-product AISC(1) per
unit produced
2017 2018E 2017 2018E 2017 2018E
Gold $1,100 $510 $650
Silver $15.25 $7.10 $9.15
  1. Refers to a non-GAAP financial measure or an additional line item or subtotal in financial statements as described at the end of this press release. Reconciliations for all non-GAAP financial measures are available at and in Section 10 of the Company’s first quarter 2018 Management’s Discussion & Analysis, which has been filed on SEDAR.

For 2018 and 2019, the Company expects average co-product cash costs of $500 per ounce gold and $6.70 per ounce silver, and co-product AISC of $650 per ounce gold and $8.85 per ounce silver.


The exploration program at Cerro Moro and in the mine district commenced in the second half of 2017 after a two-year period in which the primary focus was on mine engineering and construction activities.  The Company has set an exploration objective of adding one million gold equivalent ounces (“GEO”) to the mineral inventory at Cerro Moro in the next several years.  Achieving this goal should provide further options for mine development including the potential to add a dedicated power line and reducing production costs.

To this end, the Company has allocated $11.2 million for exploration in 2018 (expanded from $9 million in the first quarter of 2018).  The additional funding will come from a discretionary portion of the exploration budget that was set aside at the beginning of the year and is to be allocated to those mines and assets returning the best results.

The Cerro Moro deposit is located in the Deseado Massif, which is a tectonic block in the central-portion of the Santa Cruz Province, covering an area of approximately 60,000 km2. The deposit consists of a series of low to intermediate sulphidation veins with high-grade gold-silver mineralization. The epithermal veins are relatively narrow subverticals with horizontal width ranging from 0.1 to 5 m, strike length from 100 to 4,000 metres and depth at 300 metres maximum.  Twelve zones have been delineated to date – Escondida, Martina, Zoe, Loma Escondida, Patricia, Nini Esperanza, Gabriela, Carla, Carlita, Deborah, Margarita and Veronica.  Cerro Moro is located on prospective ground with significant potential to expand mineral resources and ultimately extend the life of the operation.  Moreover, the Company has only begun to explore the regional potential of the 284,900 hectare land package and intends to take a systematic approach toward exploration initiatives to ensure it maximizes the value potential of Cerro Moro.

The objectives for the 2018 exploration program are:

  • Convert 110,000 GEO of inferred mineral resources to measured and indicated mineral resources;
  • Discover 250,000 GEO of new inferred mineral resources; and
  • Define future drill targets through scout drilling, soil and rock sampling, and mapping.

Drilling relating to the mineral resource conversion objective began in the second quarter as planned.  The Company believes that this objective is highly achievable by year-end.

Set forth below in Table 1 are assays results received from infill drilling in 2017 after Yamana’s last exploration update which underpin the mineral resource conversion goal.

Table 1: Select 2017 infill drilling results, including all holes completed with results above 5.0 grams per tonne (“g/t”) AuEq.  AuEq is calculated as g/t Au + (g/t Ag)/66.4 (true widths not known at this time).

Target From To Length Au (g/t) Ag (g/t) AuEq
MD2303 Nini-
68.0 72.0 4.0 3.98 661.7 13.9
MD2304 EFW 177.75 181.3 3.55 10.89 962.8 25.4
MD2304 EFW 182.7 194 11.3 11.12 1465.0 33.2
MD2309 Nini-
33.4 37.4 4.0 2.15 255.3 6.0
MD2310 Gabriela 217.3 219.75 2.45 2.47 553.4 10.8
MD2316 EFW 139.1 146.2 7.1 4.73 305.1 9.3
MD2319 EFW 263 265.95 2.95 11.73 773.9 23.4
MD2321 ECE 157.7 160.28 2.58 9.44 16.2 9.7
MD2325 EW 101.7 102.45 0.75 76.70 1960.0 106.2
MD2325 EW 105.0 106.0 1.0 6.74 578.6 15.4
MD2341 EFW 204.35 207.00 2.65 3.40 209.0 6.6
MD2344 Zoe 307.0 310.0 3.0 3.75 200.3 6.8
MD2348 EFW 222.55 223.7 1.15 2.66 189.8 5.5
MD2362 Zoe 276.25 277.89 1.64 2.86 194.1 5.8
MD2365 Zoe 267.0 273.0 6.0 19.75 1392.5 40.7
MD2365 Zoe 276.0 281.5 5.5 1.95 403.0 8.0

The Company completed approximately 3,000 metres in the first quarter of 2018 in support of the second objective of discovering new inferred mineral resources by year-end.  The majority of this drilling focused on the Veronica vein, which was discovered in 2017 and is adjacent to existing infrastructure.  While many of the assays are still pending, early results have been encouraging with highlights presented in Table 2.

Table 2: Select 2018 results from Veronica, including all holes completed with results above 5.0 grams per tonne (“g/t”) AuEq.  AuEq is calculated as g/t Au + (g/t Ag)/66.4 (true widths not known at this time).

Hole No. Target From To Length Au (g/t) Ag (g/t) AuEq
215.5 215.9 0.4 1105 808 1,117.20
MD2402 Veronica
76.3 77.0 0.7 1.79 320 6.6
MD2402 Veronica
92.5 93.7 1.2 4.77 319.2 9.6
MD2371 Veronica
21.8 22.7 0.9 3.27 146.7 5.5
MD2385 Veronica
71.00 72.63 1.63 9.33 594.1 18.3
MD2389 Veronica
232.5 233.2 0.7 18.45 9.3 18.6

Table 3 displays assays received from exploratory drilling completed since Yamana’s last exploration update.

Table 3: Select 2017 results, including all holes completed with results above 5.0 grams per tonne (“g/t”) AuEq.  AuEq is calculated as g/t Au + (g/t Ag)/66.4 (true widths not known at this time).

Target From To Length Au (g/t) Ag (g/t) AuEq
MD2314 Barbara
63.4 64.6 1.2 33.51 2696.7 74.1
MD2314 Barbara
78.2 80.0 1.8 2.17 389.4 8.0
MD2335 Esperanza
24.4 24.8 0.4 5.95 6.8 6.1
MD2336 Esperanza
35.1 35.5 0.4 23.90 41.9 24.5
MD2356 Veronica
138.20 140.00 1.80 9.84 758.7 21.3
MD2357 Veronica
150.93 151.80 0.87 11.10 11.5 11.3
MD2366 Veronica
110.00 112.00 2.00 7.92 344.5 13.1
MD2371 Veronica
21.80 22.70 0.90 3.27 146.7 5.5
MD2378 Martina 259.65 260.35 0.70 12.35 25.3 12.7
MD2378 Martina 264.80 265.15 0.35 21.40 24.4 21.8
MD2381 Veronica
75.00 87.80 12.80 35.09 1088.3 51.5
MD2383 Veronica
91.00 92.40 1.40 5.95 285.6 10.3
MD2385 Veronica
71.00 72.63 1.63 9.33 594.1 18.3
MD2386 Veronica
85.00 86.00 1.00 3.76 437.0 10.3
MD2386 Veronica
159.70 161.00 1.30 3.50 275.7 7.7
MD2387 Veronica
152.10 152.80 0.70 13.80 629.3 23.3
MD2389 Veronica
232.50 233.20 0.70 18.45 9.3 18.6

Drilling received to date has started to define a near surface open pit high grade target on the west end of the Veronica vein and has expanded the mineralized zones for Martina, Barbara South, Esperanza Splay and Esperanza Parallel. Based on results received to date, the Company believes it will achieve its second exploration objective to add approximately 250,000 GEO of new inferred mineral resources by year-end.

In the first quarter of 2018, approximately 4,250 metres of scout drilling was also completed in support of the objective to define future drill targets. Assays have yet to be received for the majority of the work completed in the first quarter, however early results at Tres Lomas are encouraging and have provided a better understanding to the structural controls of the vein system, follow up drilling is planned throughout 2018 (notable drill holes are presented in Table 4 below). As well, visually impressive results were identified at Veronica (120 metres to the west of the known system), Martina, Esperanza Parallel, Silvia, Seco and Milagros. Additional targets to be tested with scout drilling in 2018 are Gabriel NW, La Negrita Edge and Michelle. Once assays are received for all of these drill holes, follow up drilling will commence on priority targets. In addition, a soil grid was completed in the first quarter comprised of more than 2,200 soil samples focusing on the core mine area.  Geological mapping, surface sampling and the completion of a geophysical survey are also planned for 2018 to help identify future targets.

Table 4: Select results from Tres Lomas including all holes completed with results above 5.0 grams per tonne (“g/t”) AuEq.  AuEq is calculated as g/t Au + (g/t Ag)/66.4 (true widths not known at this time).

Target From To Length Au
MD2395 Tres
46.38 47.33 0.95 8.11 159 10.5

Measures have been taken to allow for an expanded exploration program in 2019. The construction of new core logging facilities is underway to allow processing of higher volumes of core and the establishment of a district exploration team has commenced to establish and develop drill targets away from the core mine. The focus for the 2019 exploration program will be to expand on the results of the program from 2018.  With a focus on generating a pipeline of exploration opportunities to ensure the Company reaches its larger objective of adding one million GEO in the next several years.


With the exploration effort to date, the Company is now considering ahead of original plans investing in a connection to utility power which would further improve costs.

Additional details on the timing of the potential investment and subsequent development timeline plus capital estimates for construction of the necessary infrastructure are expected once the Company has advanced the opportunity to a more detailed level of study.

Qualified Persons

Scientific and technical information contained in this press release relating Cerro Moro has been reviewed and approved by Henry Marsden (Senior Vice President, Exploration) and Carlos Bottinelli (Manager, Technical Services). Each of Messrs. Marsden and Bottinelli is an employee of Yamana Gold Inc. and a “Qualified Person” as defined by Canadian Securities Administrators’ National Instrument 43-101 – Standards of Disclosure for Mineral Projects.

About Yamana

Yamana is a Canadian-based gold producer with significant gold production, gold development stage properties, exploration properties, and land positions throughout the Americas including Canada, Brazil, Chile and Argentina.  Yamana plans to continue to build on this base through existing operating mine expansions and optimization initiatives, development of new mines, the advancement of its exploration properties and, at times, by targeting other gold consolidation opportunities with a primary focus in the Americas.

Investor Relations and Corporate Communications


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