Ero Copper Corp. (TSX: ERO) (NYSE: ERO) is pleased to provide a quarterly update on the ongoing exploration programs for its 99.6% owned MCSA Mining Complex located in Bahia State, Brazil and its 97.6% owned NX Gold Mine located in Mato Grosso State, Brazil. This update encompasses drill and assay results received from mid-June through the end of September 2021 ahead of the Company’s 2021 National Instrument 43-101, Standards of Disclosure for Mineral Projects (“NI 43-101”) compliant resource and reserve updates for the MCSA Mining Complex and the NX Gold Mine, expected to be completed prior to year-end.
MCSA In-Mine and Near-Mine Exploration Programs
MCSA Past Producing Open Pit Mine Re-Evaluation
NX Gold Mine Highlights
Commenting on the results, David Strang, CEO, stated, “Our third quarter drill results continued to highlight our disciplined and methodical exploration strategy throughout our exploration portfolio where we have made significant strides thus far in 2021. With the latest set of drill results from the Deepening Extension zone of the Pilar Mine, the Vermelhos Mine and at NX Gold, we expect to see a positive impact on our year-end mineral reserve and resource estimates across our assets. At the same time, we have continued to advance our programs throughout the Curaçá Valley including further extending high-grade mineralization at Lagoa da Mina and throughout our regional exploration programs where efforts are currently focused on newly identified mineralization within the Pilar District.
“Within the Deepening Extension zone, recent drilling has further extended the known limits of the high- grade ‘Superpod’ mineralization and enhanced our understanding of the increasing potential of the Deepening relative to the project as outlined in 2020. Site clearing and early civil works commenced in September, and in parallel, new drill results are being incorporated into engineering efforts focused on ensuring the optimal external shaft design. We are taking the time to strategically review the shaft design parameters relative to what we knew about the mineral resources of the Deepening in 2020 to provide the maximum benefit for the long-term future of the Company. These efforts are centered upon a potential increase in the shaft depth and diameter in order to (i) enhance flexibility for continuing to extend the mine to depth with new drilling and (ii) optimize material and personnel movement to maximize productive shaft capacity from the highest-grade known area of the Pilar Mine. In the simplest sense, we see an opportunity for increased production volumes from the Pilar Mine through development of a two-mine system with upper level production, including new high-grade areas identified within the South Extension, to be serviced by the existing 650 meter shaft while the Deepening Project will be a mine within a mine, fully serviced by our new 1,500 meter external shaft.
“Our exploration activities at the NX Gold Mine are also generating exciting results, particularly at the Matinha Vein, which like the early days of Santo Antonio, now appears to have the potential to become an additional feed source for the mill while leveraging the nearby mine infrastructure of the Brás Vein.”
There are currently twenty-four drill rigs working throughout the Curaçá Valley, including six drill rigs allocated to regional exploration. Nine drill rigs are operating at NX Gold and the Company now has four drill rigs operating at the Boa Esperança project in Pará State.
Exploration activities during the period continued to advance target zones and new mineral systems within each of the Company’s core exploration programs. These programs are focused on developing a portfolio of assets in parallel with potential to meaningfully augment each phase of the Company’s life- of-mine production plans from the near to medium-term and over the long-term at both the MCSA Mining Complex and the NX Gold Mine. A summary of relevant highlights from these programs is presented in Table 1, attached to this press release. Highlights from ongoing exploration activities at the Boa Esperança project were included in the Company’s press release dated September 28, 2021 and additional drilling will be included in subsequent exploration updates.
Expansions and extensions, as referenced herein, reflect mineralization not captured in the Company’s NI 43-101 compliant mineral resource and mineral reserve models, as outlined in the Company’s technical reports dated January 8, 2021, and January 14, 2021 for NX Gold Mine and the MCSA Mining Complex (or the “Curaçá Valley”), respectively. There has been insufficient work and analysis surrounding new discoveries, as referenced herein, to define a mineral resource, and it is uncertain if further exploration and analysis will result in such targets being delineated as a mineral resource.
The drill holes outlined in this press release within the Pilar and Vermelhos Districts will be made available on the Company’s Curaçá Valley site tour and interactive three-dimensional models for the Pilar Mine and the Vermelhos System, which can be accessed via the Company’s website (www.erocopper.com) or via VRIFY Technology Inc. (“VRIFY”) (www.vrify.com).
IN-MINE & NEAR-MINE EXPLORATION PROGRAMS
During the period, the Company continued to prioritize infill and extensional drilling of several key areas within the Company’s operations in advance of its 2021 mineral resource and reserve update, expected to be released prior to year-end. These programs prioritized drilling of (i) the Deepening Extension within the Pilar Mine, where the Company continues to confirm thick and high-grade mineralization at depth, (ii) new drilling in the South Extension, targeting a high-grade zone located within the upper levels of the Pilar Mine, and (iii) extensions of the Vermelhos Mine, including the northern extension between the Vermelhos Mine and N8 deposit known as the East Zone Conduit.
The Deepening Extension Zone, Pilar Mine
Exploration activities within the Deepening Extension remain focused on upgrading high-grade zones of Inferred mineral resources through infill drilling as well as further extending the known limits of mineralization to depth. Deepening Extension drilling is currently targeting mineralization on the East Limb of the Pilar Mine to level -1550 approximately 1,200 to 2,000 meters below surface. Current development within the mine has been completed to level -1000.
At the deepest limits of the 2020 Inferred mineral resource shell, new drilling continues to increase confidence and extend the limits of an extremely high-grade “Superpod” style zone of mineralization where two plunging zones previously identified within the Deepening Extension appear to join together over an identified strike length of approximately 450 meters and demonstrated vertical continuity over 365 meters. Drilling in this area continues to confirm some of the best drill results drilled by the Company in the Curaçá Valley. The zone remains open to depth and is located approximately 550 meters beneath current mine infrastructure. In parallel with early site works that commenced in September, engineering and design efforts are underway to review the 2020 shaft design, incorporating the latest drilling. These efforts are centered upon maximizing productive shaft capacity for the highest grade areas of the Pilar Mine through the creation of a two-mine system. In this scenario, all personnel and material movement for the deeper levels of the mine would be independent from activities in the upper levels of the mine. Design efforts are targeting increased overall production volumes from the Pilar Mine relative to the Company’s 2020 life-of-mine plan as well as enhanced operational flexibility to support future development of the mine at depth, where high-grade mineralization remains open.
Results during the period are highlighted by hole FC5527 that intercepted 71.2 meters grading 3.55% copper, including 13.0 meters at 8.87% copper. This intercept is located at the same level, approximately 65 meters south, of the previously released intercept within the Deepening Extension (hole FC5522 that intercepted 67.0 meters grading 9.21% copper). Demonstrating continuity of high-grade mineralization along strike, new drilling in hole FC5396 intercepted 61.0 meters grading 2.11% copper, including 18.0 meters at 3.92% copper, drilled at the same level approximately 150 meters south of intercept FC5527, and over 200 meters south of previously released hole FC5522. Vertical continuity within the zone is highlighted by the previously released hole FC5625 that intercepted 96.4 meters grading 3.97% copper, including 60.6 meters grading 5.61% copper, located approximately 230 meters above the intercepts highlighted in holes FC5527, FC5522 and FC5396. Together with prior results, these intercepts demonstrate localized thickening and vertical continuity of high-grade mineralization over a down-dip distance of approximately 365 meters throughout the 450 meters of identified strike length. Please refer to the Company’s press releases dated July 7, 2021 and June 23, 2020 for additional detail on previously released holes.
Please see Figure 1 for a north-south long section, Figure 2 for a west to east composite section and Figure 3 for a level map showing collar locations of Deepening Extension drilling within the Pilar Mine.
Q3 2021 Deepening Intercepts(1)
|Hole ID||From (m)||To (m)||Length (m)||Cu (%)|
(1) NSI indicates no significant intercept based on a three meter mining width and cut-off grade of 0.51% copper. Drill holes were drilled from level -674 in the Pilar Mine. Holes not included are either pending assay results, have been included in a different section of this press release, or were included in a prior press release. The length of intercept may not represent the true width of mineralization. Values may not add up due to rounding. From, To and Length are rounded to the nearest tenth of a meter.
South Extension, Pilar Mine
In 2019, a comprehensive exploration campaign targeting the southern limits of the Pilar Mine orebody, known as the “South Extension” was undertaken. The results of this campaign, along with subsequent exploration programs throughout the mine, have contributed to significant increases in the known extent of mineralization. During the period new drilling within the South Extension, located approximately 100 meters below the underground primary crushers and existing shaft infrastructure on level -120, was performed adjacent to an active mining area beyond the known limits of the mineral resource shell. This drilling encountered unexpected extensions of high-grade mineralization approximately 40 meters from the previously modeled limits of the mineral resource shell and 50 meters from existing mine infrastructure. Relative to the 2019 campaign, newly encountered high-grade mineralization is on the same level approximately 100 meters further south of the previously released intercept of hole FC3264 (21.0 meters grading 1.41% copper, including 4.0 meters grading 3.54% copper, and 31.9 meters grading 2.78% copper, including 3.0 meters grading 5.63% copper, as detailed in the Company’s press release dated June 20, 2019). Engineering work is focused on incorporating this newly identified extension into the Pilar Mine’s near-term mine plan while additional drilling is planned to further extend high-grade mineralization, which remains open to the south.
Results during the period are highlighted by hole FC2974 that intercepted 8.7 meters grading 5.39% copper, including 4.7 meters grading 7.99% copper, and hole FC2977 that intercepted 22.0 meters grading 1.57% copper, including 4.0 meters grading 3.43% copper. These new intercepts, drilled approximately 25 meters apart, demonstrate lateral continuity over 50 meters and vertical continuity of 40 meters and, with prior drilling, continue to provide evidence of high-grade continuity south of known mineralization in the upper levels of the Pilar Mine.
Please see Figure 4 for a level map showing collar locations of South Extension drilling within the Pilar Mine.
South Extension Intercepts(1)
|Hole ID||From (m)||To (m)||Length (m)||Cu (%)|
(1) NSI indicates no significant intercept based on a three meter mining width and cut-off grade of 0.51% copper. Drill holes were drilled from level -170 in the Pilar Mine. Holes not included are either pending assay results, have been included in a different section of this press release, or were included in a prior press release. The length of intercept may not represent the true width of mineralization. Values may not add up due to rounding. From, To and Length are rounded to the nearest tenth of a meter. (*) Denotes short-term drilling undertaken for mine planning purposes that intersected new un-modeled mineralized envelopes.
Vermelhos Mine Extensions
Within the Vermelhos District, drilling during the period sought to conclude a planned program targeting mineralization within the northern portion of the East Zone from the Vermelhos Mine to the southern limits of the N8 deposit over a strike length of approximately 500 meters. The results of this program have now demonstrated continuity of mineralization along a structural corridor connecting Siriema with the planned mining stopes of UG1 and UG3 (within the Vermelhos Mine) through the Southern Vermelhos Corridor, north through the East Zone to the N8 Deposit. The results of this concluded program are expected to be reflected in the Company’s upcoming 2021 mineral resource and reserve update. Additionally, drilling within the Vermelhos Mine during the period sought to further test continuity of mineralization within the vicinity of the Vermelhos Mine main orebodies, Toboggan and Sombrero.
East Zone Conduit results during the period are highlighted by hole FV-321 that intercepted 24.0 meters grading 0.81% copper, including 4.0 meters grading 1.50% copper, and hole FVS-876 that intercepted 13.5 meters grading 1.24% copper, including 2.0 meters grading 2.53% copper. These intercepts were drilled approximately 475 meters apart. The intercept of hole FVS-876 is located at the same depth, approximately 430 meters north of the existing eastern-most underground infrastructure of the Vermelhos Mine, and when paired with new and previously released drilling, demonstrates mineralized continuity along the north-trending corridor from Siriema, located south of the Vermelhos Mine, to the N8 deposit north of the mine.
Ongoing infill drilling within the main Vermelhos Mine orebodies, including at depth, continues to extend mineralization beyond the previously defined limits of the deposit. Results are highlighted by hole FVS-1162 that intercepted 16.9 meters grading 1.66% copper, including 5.8 meters grading 9.87% copper, located approximately 25 meters beneath the existing infrastructure of the mine below the Sombrero orebody, and hole FVS-1275 that intercepted 8.4 meters grading 3.01% copper and 13.8 meters grading 4.65% copper, including 5.3 meters grading 7.90% copper, located immediately above the Toboggan orebody. The intercept of hole FVS-1275, paired with holes FVS-1273, FVS-1278, FVS-1282 and FVS-1283, demonstrates extensions of mineralization approximately 30 meters above the previously defined limits of the Toboggan orebody within the existing infrastructure of the mine.
Please see Figure 5 for a plan map detailing all Vermelhos near-mine collar locations, Figure 6 for north-south long section detailing all Vermelhos near-mine drilling.
|Hole ID||From (m)||To (m)||Length (m)||Cu (%)|
|Vermelhos Mine Orebody Extensions|
|East Zone Conduit|
(1) NSI indicates no significant intercept, based on a three meter mining width and a cut-off grade of 0.18% copper for near- surface intervals and 0.51% for intervals below 200 meters down hole. Drill holes were drilled from surface and from level +170, level +165, and level +350 in the Vermelhos Mine. Holes not included are either pending assay results, have been included in a different section of this press release, or were included in a prior press release. The length of intercept may not represent the true width of mineralization. Values may not add up due to rounding. From, To and Length are rounded to the nearest tenth of a meter. (*) Denotes short-term drilling undertaken for mine planning purposes that intersected new un- modeled mineralized envelopes.
PAST PRODUCING MINE RE-EVALUATION
In late 2020, the Company commenced an exploration program designed to strategically review and re- evaluate known zones of mineralization existing beneath several past producing open pit mines throughout the Curaçá Valley. This program sought to utilize and incorporate new datasets developed during the Company’s regional exploration programs to identify and extend high-grade mineralized envelopes beneath mines that may be suitable for open pit and/or underground mine development. The results of this program continue to demonstrate continuity of high-grade mineralization within Lagoa da Mina, part of the past-producing Angicos Mine. With continued success, this new zone may form an integral component of the Company’s near to medium-term growth objectives with respect to utilizing excess mill capacity at elevated grade profiles.
Lagoa da Mina, Angicos Mine, Surubim District
The past producing open pit Angicos Mine, within the Surubim District, is located approximately 11 kilometers northeast of the Surubim Open Pit Mine and approximately 32 kilometers north of the Pilar Mine. Results at Lagoa da Mina continue to highlight continuity of high-grade mineralization at depth and extend the known limits of mineralization. To date, an interpreted west-dipping high-grade lens can be traced over approximately 200 meters in strike length, 300 meters down-dip beginning approximately 70 meters below the bottom of the historic open pit and over variable thicknesses up to 17 meters.
Results during the period are highlighted by hole FLM-94 that intercepted 16.0 meters grading 1.18% copper and 24.0 meters grading 1.54% copper, including 11.0 meters at 2.30% copper. The new high- grade intercept of hole FLM-94 reflects a step-out hole by approximately 250 meters from previously released holes FLM-77 that intercepted 32.2 meters grading 2.69% copper, including 6.0 meters grading 4.00% copper, and FLM-16 that intercepted 15.0 meters grading 3.03% copper, including 4.0 meters grading 4.44% copper. Mineralization remains open down-plunge to the north. Please refer to the Company’s press releases dated July 7, 2021 and April 29, 2021 for additional drill results.
Please see Figure 7 for a plan map detailing Lagoa da Mina collar locations and Figure 8 for a north- south long section.
Q3 2021 Lagoa da Mina Intercepts(1)
|Hole ID||From (m)||To (m)||Length (m)||Cu (%)|
(1) NSI indicates no significant intercept, based on a three meter mining width and a cut-off grade of 0.18% copper for regional exploration programs to demonstrate geological controls, irrespective of depth. Drill holes were drilled from surface. Holes not included are either pending assay results, have been included in a different section of this press release, or were included in a prior press release. The length of intercept may not represent the true width of mineralization. Values may not add up due to rounding. From, To and Length are rounded to the nearest tenth of a meter.
REGIONAL EXPLORATION PROGRAM
The Company continues to systematically develop, refine and test its pipeline of regional exploration targets. Progress of the program is excellent, reflecting a multi-year effort to construct a detailed geological database that incorporates airborne geophysics, ground geophysics, and detailed groundwork including soil geochemistry, mapping and trenching. In addition to follow-up work on the previously announced regional systems of C4 and Terra do Sal, both located in the Central Surubim District, the Company is actively working in a new regional system located west of the Pilar Mine. The apparent extent of mineralization, and its proximity to existing infrastructure in an area which has historically seen very little exploration activity, remains encouraging. Detailed work focusing on evaluating structural controls, with the help of borehole EM, to target high-grade mineralization within each of these zones remains ongoing.
NX GOLD MINE
The NX Gold Mine is a producing high-grade gold mine, located in Mato Grosso State, Brazil. Beginning in late 2018, a comprehensive in-mine exploration program commenced for the first time since the mine was commissioned in 2012, resulting in the Santo Antonio Vein discovery. In late 2019, all mining activity was transitioned from the Brás and Buracão Veins into the central Santo Antonio Vein. To date, the Santo Antonio Vein has been defined over a lateral extent of approximately 500 meters, and a newly increased down-plunge distance of approximately 800 meters. The vein remains open to depth (see press release dated April 18, 2019 for detail regarding the Santo Antonio Vein discovery).
Drilling at the NX Gold Mine remains focused on three primary objectives for 2021: (i) infill and extension of the Santo Antonio Vein, (ii) delineation and discovery of new gold-bearing veins within the NX Gold Mine system near existing infrastructure, such as the Matinha Vein, and (iii) executing upon the first regional exploration program conducted on the broader NX Gold land package.
NX Gold In-Mine Programs
Within the NX Gold Mine system, drilling was focused on testing down-plunge continuity of the Santo Antonio Vein and evaluating the potential for new down-plunge vein extensions of the Matinha Vein, located approximately 550 meters east of development within the Brás Vein (approximately 750 meters east of development within the Santo Antonio Vein).
Within the Santo Antonio Vein, results are highlighted by SA94B that intercepted 6.0 meters at 23.61 gpt gold, demonstrating continuity of high-grade gold mineralization to depth. The intercept is located approximately 40 meters south from previously released drill hole SA94A (9.0 meters at 22.66 gpt Au) and approximately 40 meters down-plunge from previously released drill hole SA89 (2.7 meters at 15.38 gpt Au). Additional drilling down-plunge of the deepest known gold mineralization within Santo Antonio Vein is highlighted by hole SA104 that intercepted 8.8 meters at 3.92 gpt gold, located approximately 115 meters beyond the current limit of the Inferred mineral resource shell. The vein remains open to depth.
Following the July 2021 announcement of newly discovered extensions at depth within the Matinha Vein. New drilling during the third quarter sought to further extend the known limits of mineralization to depth. Results during the period are highlighted by MAT25 that intercepted 10.9 meters at 3.52 gpt gold, located approximately 65 meters down-plunge from previously announced drill hole MAT20A (2.8 meters at 19.73 gpt Au) suggesting apparent thickening of the vein at depth. Additionally, new drilling in the Matinha Vein has highlighted the presence of two parallel vein structures, known as the upper and lower veins, which are separated by approximately 200 meters. The significance of the parallel vein at depth remains unknown at this stage and exploration drilling remains ongoing. Both vein occurrences remain open along strike and to depth.
Please see Figure 9 for a plan map detailing NX Gold Mine collar locations and Figure 10 for an east- west composite section.
Q3 2021 NX Gold In-Mine Intercepts(1)
|Hole ID||From (m)||To (m)||Length (m)||Au (gpt)|
|Santo Antonio Extension to Depth|
|Matinha Upper Vein|
|Matinha Lower Vein|
(1) NSI indicates no significant intercept, based on cut-off grade of 1.40 grams per tonne gold. Drill holes were drilled from surface. The length of intercept may not represent the true width of mineralization and reported intercepts reflect the entire thickness of the vein. Values may not add up due to rounding. From, To and Length are rounded to the nearest tenth of a meter. Drill hole intercept for MAT23 reflects new assays that were previously pending.
NX Gold Regional Exploration Program
The first regional exploration campaign on the broader NX Gold land package commenced in early 2021. Results from this program continue to demonstrate that additional gold-bearing quartz veins are prevalent throughout the broader NX Gold District. Exploration activities are ongoing at the Mata Verde System, located approximately 25 kilometers north-north-east of the NX Gold Mine. To date, the Mata Verde System has been traced over approximately 10.5 kilometers. Geophysics and geochemistry are being used to identify drill targets within a system that is predominantly covered by overburden. Exploration drilling, focused on systematically testing the Mata Verde System, is expected to continue for the duration of 2021.
NOTE ON NI 43-101 COMPLIANT TECHNICAL REPORT(S)
The conversion of drill results presented in this press release into NI 43-101 compliant mineral resources and mineral reserves, including but not limited to the drill results associated with the new and potential extensions of mineralization across each of the mineral districts, including new discoveries and newly identified mineralized systems outlined in this press release, all require additional work and analysis that remains ongoing. To date, there has been insufficient exploration and accompanying analysis to define a mineral resource and it is uncertain if further exploration will result in these extensions being delineated as a mineral resource. Accordingly, the results herein may not be included in future NI 43-101 compliant mineral resources or mineral reserves depending on the results of this additional work and analysis, and other technical and/or economic reasons.
QUALITY ASSURANCE / QUALITY CONTROL
MCSA Mining Complex
The Company is currently drilling on surface and underground with core drill rigs using a combination of owned and third-party contracted drill rigs. During the period from July 2021 through September 2021, third-party drill rigs were operated by Major Drilling do Brasil Ltda., Tamarama Sondagens Ltda., Layne Christensen Co., and DrillGeo Geologia e Sondagem Ltda., all of whom are independent of the Company. Drill core is logged, photographed and split in half using a diamond core saw at the secure core logging and storage facilities of Mineração Caraíba S.A. (“MCSA”). Half of the drill core is retained on site and the other half core is used for analysis, with samples collected on one-meter sample intervals unless an interval crosses a geological contact. Reverse circulation cuttings are split at the drill rig using one-meter sample intervals. All sample preparation is performed in MCSA’s secure on-site laboratory. Total copper is determined using a nitric-hydrochloric acid digestion and Atomic Absorption Spectrometry (“AAS”) and/or Titration. Oxide copper values are determined using sulfuric acid digestion followed by AAS. All sample results during the period have been monitored through a QA/QC program that includes the insertion of certified standards, blanks, and pulp and reject duplicate samples. Regular check-assays are submitted to ALS Brasil Ltda’s facility located in Vespasiano, Minas Gerais, Brazil, at a rate of approximately 5%. ALS Brasil Ltda is a subsidiary of ALS Limited and is independent of the Company.
NX Gold Mine
The Company is currently drilling on surface with third-party contracted core drill rigs. During the period from July 2021 through September 2021 third-party drill rigs were operated by Servitec Foraco Sondagem S.A. who is independent of the Company. Drill core is logged, photographed and split in half using a diamond core saw at NX Gold S.A.’s (“NX Gold”) secure core logging and storage facilities. Half of the drill core is retained on site and the other half core is used for analysis, with samples collected on half-meter sample intervals for quartz vein and one-meter intervals in surrounding rock unless such interval crosses a geological contact. Samples are sent to ALS Brasil Ltda.’s laboratory in Goiânia (Brazil) for preparation and are analyzed by the certified laboratory of ALS Peru S.A., whom are independent of the Company. During the period, gold content has been determined by both fire assay and screen fire assay. All sample results during the period have been monitored through a QA/QC program that includes the insertion of certified standards, blanks, and pulp and reject duplicate samples at a rate of one standard, one blank, and one duplicate pulp sample per every 20 samples for a blended rate of approximately 5%.
Emerson Ricardo Re, MSc, MBA, MAusIMM (CP) (No. 305892), Registered Member (No. 0138) (Chilean Mining Commission) and Resource Manager of the Company who is a “qualified person” within the meanings of NI 43-101, has reviewed and approved the disclosure of technical information, including verification of the sampling, analytical and testing data in this press release. Quarterly reviews entail sampling and laboratory procedure review as well as verification of original assay certificates associated with a selection of samples from Company’s internal database included in this press release.
ABOUT ERO COPPER CORP
Ero Copper Corp, headquartered in Vancouver, B.C., is focused on copper production growth from the MCSA Mining Complex located in Bahia State, Brazil, with over 40 years of operating history in the region. The Company’s primary asset is a 99.6% interest in the Brazilian copper mining company, MCSA, 100% owner of the MCSA Mining Complex, which is comprised of operations located in the Curaçá Valley, Bahia State, Brazil, wherein the Company currently mines copper ore from the Pilar and Vermelhos underground mines, and the Boa Esperança development project, an IOCG-type copper project located in Pará, Brazil. The Company also owns 97.6% of the NX Gold Mine, an operating gold and silver mine located in Mato Grosso, Brazil. Additional information on the Company and its operations, including technical reports on the MCSA Mining Complex, Boa Esperança and NX Gold properties, can be found on the Company’s website (www.erocopper.com), on SEDAR (www.sedar.com), and on EDGAR (www.sec.gov).
Figures accompanying this release can be downloaded here:
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