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Blackrock Silver Drills Multiple +1 kg/t AgEq Intercepts and Establishes Grade Continuity over 350 Metres in Final M&I Conversion Assays at Tonopah West

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Blackrock Silver Corp announced final high-grade silver and gold drill results from its M&I Conversion Program at Tonopah West project. The program, consisting of 62 drillholes totaling 12,580 meters, validated geologic model and confirmed continuous high-grade mineralization over 350 meters. Standout results include TXC25-139 with 9.05m at 367 g/t AgEq and TXC25-150 with 2.84m at 671.5 g/t AgEq. The program successfully established grade continuity in the DPB resource area, with mineralization remaining open to the Northwest and downdip. New near-surface zones of ultra-high-grade gold and silver were discovered, representing additional tonnage potential. An updated mineral resource estimate is expected in Q3 2025, aimed at upgrading significant tonnage to measured and indicated categories.
Blackrock Silver Corp ha annunciato i risultati finali di perforazione ad alta concentrazione di argento e oro nell'ambito del Programma di Conversione M&I presso il progetto Tonopah West. Il programma, composto da 62 fori per un totale di 12.580 metri, ha confermato il modello geologico e la mineralizzazione continua ad alta concentrazione per oltre 350 metri. Tra i risultati più significativi si segnalano TXC25-139 con 9,05 m a 367 g/t AgEq e TXC25-150 con 2,84 m a 671,5 g/t AgEq. Il programma ha stabilito con successo la continuità della concentrazione nell'area delle risorse DPB, con mineralizzazione ancora aperta a nord-ovest e in profondità. Sono state scoperte nuove zone near-surface di oro e argento ultra-concentrati, rappresentando un potenziale di tonnellaggio aggiuntivo. Una stima aggiornata delle risorse minerarie è prevista per il terzo trimestre 2025, con l'obiettivo di elevare una parte significativa del tonnellaggio alle categorie misurate e indicate.
Blackrock Silver Corp anunció los resultados finales de perforación de alta ley de plata y oro de su Programa de Conversión M&I en el proyecto Tonopah West. El programa, que consistió en 62 perforaciones con un total de 12,580 metros, validó el modelo geológico y confirmó una mineralización continua de alta ley a lo largo de 350 metros. Los resultados destacados incluyen TXC25-139 con 9.05 m a 367 g/t AgEq y TXC25-150 con 2.84 m a 671.5 g/t AgEq. El programa estableció con éxito la continuidad de la ley en el área de recursos DPB, con mineralización aún abierta hacia el noroeste y hacia abajo. Se descubrieron nuevas zonas cercanas a la superficie con oro y plata de ultra alta ley, representando un potencial adicional de tonelaje. Se espera una estimación actualizada de recursos minerales para el tercer trimestre de 2025, con el objetivo de actualizar una cantidad significativa de tonelaje a las categorías medidas e indicadas.
Blackrock Silver Corp는 Tonopah West 프로젝트의 M&I 전환 프로그램에서 고등급 은 및 금 시추 최종 결과를 발표했습니다. 총 12,580미터에 이르는 62개의 시추공으로 구성된 이 프로그램은 지질 모델을 검증하고 350미터에 걸친 지속적인 고등급 광물화를 확인했습니다. 주목할 만한 결과로는 TXC25-139에서 9.05m 구간에 367 g/t AgEq, TXC25-150에서 2.84m 구간에 671.5 g/t AgEq가 있습니다. 이 프로그램은 DPB 자원 지역 내 등급 연속성을 성공적으로 확립했으며, 광물화는 북서쪽과 하강 방향으로 열려 있습니다. 지표 근처에서 초고등급 금과 은의 새로운 구역도 발견되어 추가적인 광석량 잠재력을 나타냅니다. 2025년 3분기에 업데이트된 광물 자원 추정치가 발표될 예정이며, 이는 상당한 광석량을 측정 및 표시 범주로 업그레이드하는 것을 목표로 합니다.
Blackrock Silver Corp a annoncé les résultats finaux des forages à haute teneur en argent et or dans le cadre de son programme de conversion M&I sur le projet Tonopah West. Le programme, composé de 62 trous de forage totalisant 12 580 mètres, a validé le modèle géologique et confirmé une minéralisation continue à haute teneur sur 350 mètres. Les résultats marquants incluent TXC25-139 avec 9,05 m à 367 g/t AgEq et TXC25-150 avec 2,84 m à 671,5 g/t AgEq. Le programme a établi avec succès la continuité des teneurs dans la zone de ressources DPB, la minéralisation restant ouverte au nord-ouest et en profondeur. De nouvelles zones proches de la surface, à très haute teneur en or et argent, ont été découvertes, représentant un potentiel supplémentaire en tonnage. Une estimation mise à jour des ressources minérales est attendue au troisième trimestre 2025, visant à reclasser une quantité significative de tonnage en catégories mesurées et indiquées.
Blackrock Silver Corp gab die endgültigen Ergebnisse hochgradiger Silber- und Goldbohrungen aus ihrem M&I-Umwandlungsprogramm beim Tonopah West-Projekt bekannt. Das Programm, bestehend aus 62 Bohrlöchern mit insgesamt 12.580 Metern, bestätigte das geologische Modell und bestätigte eine kontinuierliche hochgradige Mineralisierung über 350 Meter. Hervorzuhebende Ergebnisse sind TXC25-139 mit 9,05 m bei 367 g/t AgEq und TXC25-150 mit 2,84 m bei 671,5 g/t AgEq. Das Programm stellte erfolgreich die Kontinuität der Gehalte im DPB-Ressourcenbereich fest, wobei die Mineralisierung nach Nordwesten und in die Tiefe offen bleibt. Neue oberflächennahe Zonen mit ultra-hochgradigem Gold und Silber wurden entdeckt, was ein zusätzliches Tonnenpotenzial darstellt. Eine aktualisierte Ressourcenschätzung wird für das dritte Quartal 2025 erwartet, mit dem Ziel, bedeutende Tonnenmengen in die Kategorien gemessen und angezeigt hochzustufen.
Positive
  • Multiple high-grade intercepts with standout grades, including 9.05m at 367 g/t AgEq and 2.84m at 671.5 g/t AgEq
  • Successful validation of geologic model with continuous mineralization over 350 meters
  • Discovery of new near-surface zones with ultra-high-grade gold and silver mineralization
  • 65% of drilling returned values above 150 g/t AgEq cutoff, with no completely barren holes
  • Mineralization remains open to Northwest and downdip, indicating expansion potential
Negative
  • Updated mineral resource estimate pending until Q3 2025
  • Results from 7 drillholes from Northwest step out resource expansion area still pending

Final Assay Results from the M&I Conversion Program Confirm High-Grade Continuity of Gold and Silver Mineralization over 350 Metres in the M&I Conversion Area

HIGHLIGHTS:

  • TXC25-139 cut 9.05 metres grading 367 grams per tonne (g/t) silver equivalent (AgEq) (182.8 g/t silver (Ag) & 2.04 g/t gold (Au)) from 187.5 metres, including 0.82 metres grading 2,886 g/t AgEq (1,411 g/t Ag & 16.13 g/t Au), Ag/Au ratio 90:1;
  • TXC25-150 drilled 2.84 metres grading 671.5 AgEq (367 g/t Ag & 3.41 g/t Au) from 162.3 metres, including 0.76 metres grading 1,554 g/t AgEq ( 819 g/t Ag & 8.14 g/t Au);
  • TXC25-146 intercepted 1.16 metres of 1,111 g/t AgEq (615 g/t Ag & 5.50 g/t Au) from 189.5 metres;
  • Results from the entirety of the M&I Conversion Program have validated the geologic model, successfully establishing continuity of the high-grade shoots bearing robust geometry over 350 metres. The shoots remain open to the Northwest and downdip;
  • Significant new zones of near-surface mineralization were encountered during the M&I Conversion Program at higher-than-average grades updip from the existing resource shell;
  • Modelling of the M&I Conversion Program drillholes is now underway with an updated mineral resource estimate on Tonopah West on track for Q3, 2025; and
  • Assay results for 7 drillholes from the Company's Northwest step out resource expansion area are currently pending. (see February 24, 2025 news release)

Vancouver, British Columbia--(Newsfile Corp. - June 17, 2025) - Blackrock Silver Corp. (TSXV: BRC) (OTCQX: BKRRF) (FSE: AHZ0) ("Blackrock" or the "Company") announces the final set of high-grade silver and gold drill intercepts from its recently completed M&I Conversion Program (as defined herein) at its 100% owned Tonopah West project ("Tonopah West") located in Nye and Esmeralda Counties, Nevada, United States.

The Company has completed its in-fill drilling program (the "M&I Conversion Program") at Tonopah West which commenced in mid July 2024 and consisted of 62 drillholes totalling 12,580 metres (41,271 feet) within the shallow southern portion of the Bermuda-Merten vein group ("DPB") resource area (the "M&I Conversion Area"). The objective of the M&I Conversion Program is to convert between 1.0 and 1.5-million tonnes of material from inferred mineral resources to measured and indicated mineral resources. The M&I Conversion Area represents the initial years of anticipated production at Tonopah West based on the mine plan laid out in the Company's Preliminary Economic Assessment on Tonopah West (see September 4, 2024 news release).

Andrew Pollard, the Company's President and Chief Executive Officer, stated: "With all assays now received from our M&I Conversion Program, we've validated our geologic model at Tonopah West and confirmed continuous high-grade mineralization over a 350-metre zone. Results from this program featured standout grades that reinforce the Tonopah West project's position as one of the top undeveloped silver assets in the sector. In addition to strengthening confidence in known zones through tighter drill spacing, the program also outlined new near-surface zones of ultra-high-grade gold and silver mineralization, representing meaningful new tonnage potential. These results will be incorporated into an updated mineral resource estimate on Tonopah West anticipated to be completed Q3 2025, aimed at upgrading significant tonnage to the measured and indicated categories to help de-risk the early years of anticipated production."

Table 1: Tonopah West Assay Intercepts using 150 g/t AgEq cut off

Drillhole IDHole 
Type		ProgramFrom 
(m)		To (m)Drill 
Interval
 (m)		Ag (g/t)Au (g/t)AgEq 
(g/t)(2)(3)
TXC25-139RC/Core(1)M&I Conversion187.54196.609.05182.82.038366.6
Including187.54188.370.821,411.016.1332,866.4
TXC25-141RC/Core(1)M&I Conversion273.59275.171.59106.60.787177.6
TXC25-141RC/Core(1)M&I Conversion447.66448.270.61694.97.5121,372.5
Including447.97448.270.311,226.013.7332,464.9
TXC25-142RC/Core(1)M&I Conversion347.08347.600.525.11.610150.3
TXC25-142RC/Core(1)M&I Conversion361.01361.800.79597.64.5401,007.1
Including361.01361.370.371,122.08.1601,858.1
TXC25-146RC/Core(1)M&I Conversion189.50190.651.16615.05.4971,110.9
Including189.95190.650.70920.18.3301,671.6
TXC25-147RC/Core(1)M&I Conversion148.19151.853.66176.71.228287.5
Including150.88151.430.55704.04.2501,087.4
TXC25-147RC/Core(1)M&I Conversion182.58183.340.76277.55.586781.5
Including183.00183.340.34315.06.620912.2
TXC25-148RC/Core(1)M&I Conversion124.66125.430.76111.01.270225.6
TXC25-148RC/Core(1)M&I Conversion238.35240.492.13198.12.383413.1
Including238.35238.960.61512.05.5901,016.3
TXC25-149RC/Core(1)M&I Conversion129.36129.970.61491.04.570903.3
TXC25-149RC/Core(1)M&I Conversion238.35239.571.2293.71.919266.8
TXC25-149RC/Core(1)M&I Conversion252.59253.591.0138.22.157232.8
TXC25-150RC/Core(1)M&I Conversion162.37165.202.84363.63.413671.5
Including163.47164.230.76818.98.1441,553.6
TXC25-151RC/Core(1)M&I Conversion274.47275.420.95208.73.149492.8
(1)RC/Core = RC pre-collar with core tail.
(2)AgEq = Ag + Au*(Factor); where Factor = (Au Price/Ag Price)*(Au Recovery/Ag Recovery or Factor=($1900/$23)*(95%/87%)=90.21; True thickness is 90 to 100% of interval thickness based on the modelled vein geometries.
(3)Cut-off grade is 150 g/t AgEq.

 

The geometry of the high-grade silver and gold is sizable with high-grade shoots plunging to the northwest and showing continuity over 350 metres within the M&I Conversion Area. These shoots remain open to the northwest and open down plunge. Multiple high-grade intercepts have been returned pursuant to the M&I Conversion Program. TXC25-139 returned over 9-metres grading 183 g/t silver and 2.04 g/t gold for 367 g/t AgEq. This intercept is immediately adjacent to mineralization found in TXC25-138 (see May 8, 2025 news release) where a composite zone of 11.46 metres of 514 g/t AgEq (290 g/t Ag & 2.48 g/t Au) was encountered. The thickness of this mineralized vein is approaching those seen in the historic mining at the Victor and Ohio mines at Tonopah West where Victor was 24 metres thick and Ohio was 15 metres thick.

The completion of the M&I Conversion Program now allows for modelling of the vein shoots and high-grade gold and silver for an updated mineral resource estimate which is anticipated to be completed this fall. Management of the Company believes the updated mineral resource estimate will show excellent continuity between the high-grade zones and an increase in confidence of the DPB portion of the mineral resource. This information will assist in the design and implementation of an exploration decline, underground test mining and extraction of a bulk sample for metallurgical processing at Tonopah West.

Table 2 shows all of the intercepts above 150 g/t AgEq encountered pursuant to the M&I Conversion Program. Approximately 65% of the drilling returned values above 150 g/t AgEq with the remaining drillholes returning mineralization, albeit below the cutoff. No drillhole in the campaign was completely barren of gold or silver.

Table 2:Significant Assays From The M&I Conversion Program Above 150 g/t AuEq Cutt Off

Drillhole IDHole 
Type		ProgramFrom 
(m)		To (m)Drill 
Interval
 (m)		Ag (g/t)Au (g/t)AgEq 
(g/t) (2)(3)
TXC24-076RC/Core(1)M&I Conversion195.62195.930.3199.21.440229.1
TXC24-080RC/Core(1)M&I Conversion367.29369.271.98174.00.844250.1
TXC24-081RC/Core(1)M&I Conversion181.51183.491.98131.91.503267.5
TXC24-085RC/Core(1)M&I Conversion171.60172.671.07152.71.613298.2
TXC24-085RC/Core(1)M&I Conversion249.48252.072.5932.12.740279.3
TXC24-087RC/Core(1)M&I Conversion172.21174.802.591,920.920.2623,748.7
Including173.74174.801.074,328.346.5068,523.6
TXC24-090RC/Core(1)M&I Conversion161.85162.921.07436.05.110897.0
TXC24-091RC/Core(1)M&I Conversion242.32244.081.77111.01.060206.6
TXC24-091RC/Core(1)M&I Conversion249.02252.133.11350.13.519667.5
Including250.55252.131.59469.54.931914.3
TXC24-092RC/Core(1)M&I Conversion141.64142.771.13534.06.9101,157.4
TXC24-092RC/Core(1)M&I Conversion145.70149.053.35470.65.356953.8
Including148.32149.050.731,706.019.4673,462.1
TXC24-092RC/Core(1)M&I Conversion186.02187.301.28303.03.660633.2
TXC24-094RC/Core(1)M&I Conversion213.67215.802.1392.31.530230.3
TXC24-095RC/Core(1)M&I Conversion192.94194.621.68572.75.3791,057.9
TXC24-095RC/Core(1)M&I Conversion195.99197.821.83147.02.160341.9
TXC24-095RC/Core(1)M&I Conversion238.96240.031.07343.73.213633.5
Including239.48240.030.55665.06.2301,227.0
TXC24-095RC/Core(1)M&I Conversion242.47247.505.03461.53.478775.3
Including245.36246.130.761,362.09.8102,247.0
TXC24-098RC/Core(1)M&I Conversion326.75327.971.22265.64.097635.2
Including327.66327.970.301,034.016.0672,483.4
TXC24-100CoreM&I Conversion140.97143.232.26530.34.085898.8
Including141.67142.590.92943.07.1561,588.5
TXC24-101CoreM&I Conversion137.56138.841.28687.26.6561,287.6
TXC24-101CoreM&I Conversion169.26169.560.31181.02.970448.9
TXC24-101CoreM&I Conversion255.42256.491.0766.41.310184.6
TXC24-102CoreM&I Conversion152.95153.920.98628.04.6701,049.3
Including153.32153.920.61756.06.2801,322.5
TXC24-103CoreM&I Conversion232.26233.781.52134.01.675285.1
Including232.26232.560.31660.08.2301,402.4
TXC24-104CoreM&I Conversion295.20295.600.40125.01.610270.2
TXC24-115RC/Core(1)M&I Conversion332.54336.503.96375.23.154659.7
Including332.54333.911.37624.85.0661,081.8
TXC24-116RC/Core(1)M&I Conversion199.34199.890.55987.011.4672,021.4
TXC24-116RC/Core(1)M&I Conversion218.12218.690.58135.01.440264.9
TXC24-117RC/Core(1)M&I Conversion246.46247.040.58105.01.460236.7
TXC24-117RC/Core(1)M&I Conversion261.21263.232.011,141.07.1391,785.0
Including262.83263.230.403,712.026.1336,069.5
TXC24-118RC/Core(1)M&I Conversion205.98206.350.371,610.015.3332,993.2
TXC24-118RC/Core(1)M&I Conversion332.17332.540.3791.31.280206.8
TXC24-119RC/Core(1)M&I Conversion370.42375.124.69379.03.722714.8
Including372.16373.381.22770.57.7571,470.3
TXC24-121RC/Core(1)M&I Conversion262.13266.003.87179.31.365302.4
TXC24-122RC/Core(1)M&I Conversion270.05270.970.92477.74.880917.9
Including270.66270.970.31875.08.8801,676.1
TXC24-122RC/Core(1)M&I Conversion337.11342.325.21291.73.018564.0
Including341.59342.320.731,834.018.0813,465.1
TXC25-125RC/Core(1)M&I Conversion327.97329.311.34118.21.336238.7
Including328.27328.580.31432.04.900874.0
TXC25-126RC/Core(1)M&I Conversion319.61320.220.61247.82.554478.2
Including319.92320.220.31421.04.380816.1
TXC25-128RC/Core(1)M&I Conversion300.81302.211.40244.82.070431.6
TXC25-128RC/Core(1)M&I Conversion348.14348.750.61300.53.030573.8
TXC25-128RC/Core(1)M&I Conversion427.76428.460.70129.01.360251.7
TXC25-129RC/Core(1)M&I Conversion307.24308.150.91155.51.322274.8
TXC25-129RC/Core(1)M&I Conversion344.94345.550.61237.02.520464.3
TXC25-131RC/Core(1)M&I Conversion319.19319.800.61292.72.480516.5
Including319.49319.800.31584.04.9401,029.6
TXC25-132RC/Core(1)M&I Conversion437.60438.520.92125.81.804288.6
TXC25-138RC/Core(1)M&I Conversion230.40234.644.24378.53.572700.7
Including232.72233.020.311,805.015.2673,182.2
TXC25-138RC/Core(1)M&I Conversion236.68241.865.18328.22.528556.3
Including238.35238.660.311,987.015.0003,340.2
TXC25-139RC/Core(1)M&I Conversion187.54196.609.05182.82.038366.6
Including187.54188.370.821,411.016.1332,866.4
TXC25-140RC/Core(1)M&I Conversion362.90363.810.91335.63.803678.7
Including362.90363.200.30371.04.310759.8
TXC25-140RC/Core1M&I Conversion378.11380.091.9896.01.215205.6
Including379.05380.091.04136.51.787297.7
TXC25-141RC/Core(1)M&I Conversion273.59275.171.59106.60.787177.6
TXC25-141RC/Core(1)M&I Conversion447.66448.270.61694.97.5121,372.5
Including447.97448.270.311,226.013.7332,464.9
TXC25-142RC/Core(1)M&I Conversion347.08347.600.525.11.610150.3
TXC25-142RC/Core(1)M&I Conversion361.01361.800.79597.64.5401,007.1
Including361.01361.370.371,122.08.1601,858.1
TXC25-146RC/Core(1)M&I Conversion189.50190.651.16615.05.4971,110.9
Including189.95190.650.70920.18.3301,671.6
TXC25-147RC/Core(1)M&I Conversion148.19151.853.66176.71.228287.5
Including150.88151.430.55704.04.2501,087.4
TXC25-147RC/Core(1)M&I Conversion182.58183.340.76277.55.586781.5
Including183.00183.340.34315.06.620912.2
TXC25-148RC/Core(1)M&I Conversion124.66125.430.76111.01.270225.6
TXC25-148RC/Core(1)M&I Conversion238.35240.492.13198.12.383413.1
Including238.35238.960.61512.05.5901,016.3
TXC25-149RC/Core(1)M&I Conversion129.36129.970.61491.04.570903.3
TXC25-149RC/Core(1)M&I Conversion238.35239.571.2293.71.919266.8
TXC25-149RC/Core(1)M&I Conversion252.59253.591.0138.22.157232.8
TXC25-150RC/Core(1)M&I Conversion162.37165.202.84363.63.413671.5
Including163.47164.230.76818.98.1441,553.6
TXC25-151RC/Core(1)M&I Conversion274.47275.420.95208.73.149492.8
(1)RC/Core = RC pre-collar with core tail.
(2)AgEq = Ag + Au*(Factor); where Factor = (Au Price/Ag Price)*(Au Recovery/Ag Recovery or Factor=($1900/$23)*(95%/87%)=90.21; True thickness is 90 to 100% of interval thickness based on the modelled vein geometries.
(3)Cut-off grade is 150 g/t AgEq.

 

Cannot view this image? Visit: https://images.newsfilecorp.com/files/676/255788_d1bf53a51451fba6_001.jpg

Figure 1: Tonopah West project showing NI43-101 resource location and expansion potential

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/676/255788_d1bf53a51451fba6_001full.jpg

Figure 2 is a plan map showing the location of all the drillholes completed under the M&I Conversion Program and highlighting those reported in this news release.

Cannot view this image? Visit: https://images.newsfilecorp.com/files/676/255788_d1bf53a51451fba6_002.jpg

Figure 2: Drillhole location map of the M&I Conversion Program showing drillholes reported in this news release.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/676/255788_d1bf53a51451fba6_002full.jpg

Table 3: Tonopah West Drillhole Location Coordinates (based on GPS readings in the field, Datum UTM, NAD 1927, Zone 11)

Drillhole IDAreaProgramTypeUTM_NAD27 EUTM_NAD27 NElevation (m)Depth 
(ft)		Depth 
(m)		AzimuthDip
TXC25-137DPB SouthM&I ConversionRC/Core477930.74213330.81776.31028.0313.3180-62
TXC25-139DPB SouthM&I ConversionRC/Core477980.64213246.51778.41061.0323.4180-67
TXC25-141DPB SouthM&I ConversionRC/Core477826.64213599.21770.71647.0502.0180-62
TXC25-142DPB SouthM&I ConversionRC/Core477905.74213694.61772.91717.0523.3180-50
TXC25-146DPB SouthM&I ConversionRC/Core478081.54213327.21780.6912.0278.0180-60
TXC25-147DPB SouthM&I ConversionRC/Core478067.54213281.71781.7953.5290.6180-60
TXC25-148DPB SouthM&I ConversionRC/Core478073.84213237.81781.8979.0298.4180-60
TXC25-149DPB SouthM&I ConversionRC/Core478101.94213225.41783.3902.0274.9180-60
TXC25-150DPB SouthM&I ConversionRC/Core478107.84213270.41783.1897.5273.6180-60
TXC25-151DPB SouthM&I ConversionRC/Core478104.94213335.41781.1943.0287.4180-60

 

Quality Assurance/ Quality Control

All sampling is conducted under the supervision of the Company's project geologists, and a strict chain of custody from the project to the sample preparation facility is implemented and monitored. The RC and core samples are hauled from the project site to a secure and fenced facility in Tonopah, Nevada, where they are loaded on to American Assay Laboratory's (AAL) flat-bed truck and delivered to AAL's facility in Sparks, Nevada. A sample submittal sheet is delivered to AAL personnel who organize and process the sample intervals pursuant to the Company's instructions.

The RC samples are lined out at the lab and logged in to AAL's system. The core samples are cut using core saws and personnel at AAL's facility in Sparks, Nevada according to the Company's instructions delivered with each core hole.

All samples are dried, crushed to 85% passing 10 mesh (2mm) and a 250-gram sub-sample split is collected and pulverized to 200 mesh (74 micron) in a ring and puck pulverizer. Then the pulverized material is digested and analyzed for gold using fire assay fusion and an Induced Coupled Plasma (ICP) finish on a 30-gram assay split (FA-PB30-ICP). Silver is determined using five-acid digestion and ICP analysis (ICP-5AM48). Over limits for gold and silver are determined using a gravimetric finish (GRAVAU30 and GRAVAG30). Data verification of the assay and analytical results are completed to ensure accurate and verifiable results. Blackrock personnel insert a blind prep blank, lab blank or a certified reference material approximately every 15th to 20th sample.

Qualified Persons

Blackrock's exploration activities at Tonopah West are conducted and supervised by Mr. William Howald, Executive Chairman of Blackrock. Mr. William Howald, AIPG Certified Professional Geologist #11041, is a Qualified Person as defined under National Instrument 43-101 - Standards of Disclosure for Mineral Projects. He has reviewed and approved the contents of this news release.

About Blackrock Silver Corp.

Backed by gold and silver ounces in the ground, Blackrock is a junior precious metal focused exploration and development company driven to add shareholder value. Anchored by a seasoned Board of Directors, the Company is focused on its 100% controlled Nevada portfolio of properties consisting of low-sulphidation, epithermal gold and silver mineralization located along the established Northern Nevada Rift in north-central Nevada and the Walker Lane trend in western Nevada.

Additional information on Blackrock Silver Corp. can be found on its website at www.blackrocksilver.com and by reviewing its profile on SEDAR at www.sedarplus.ca.

Cautionary Note Regarding Forward-Looking Statements and Information

This news release contains "forward-looking statements" and "forward-looking information" (collectively, "forward-looking statements") within the meaning of Canadian and United States securities legislation, including the United States Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, are forward-looking statements. Forward-looking statements in this news release relate to, among other things: the Company's strategic plans; the anticipated objectives and results from the Company's drill programs at Tonopah West; the incorporation of the results from the M&I Conversion Program in an updated mineral resource estimate on Tonopah West and the anticipated timing of release thereof; the Company's de-risking initiatives at Tonopah West; estimates of mineral resource quantities and qualities; estimates of mineralization from drilling; geological information projected from sampling results; and the potential quantities and grades of the target zones.

These forward-looking statements reflect the Company's current views with respect to future events and are necessarily based upon a number of assumptions that, while considered reasonable by the Company, are inherently subject to significant operational, business, economic and regulatory uncertainties and contingencies. These assumptions include, among other things: conditions in general economic and financial markets; accuracy of assay results; geological interpretations from drilling results, timing and amount of capital expenditures; performance of available laboratory and other related services; future operating costs; the historical basis for current estimates of potential quantities and grades of target zones; the availability of skilled labour and no labour related disruptions at any of the Company's operations; no unplanned delays or interruptions in scheduled activities; all necessary permits, licenses and regulatory approvals for operations are received in a timely manner; the ability to secure and maintain title and ownership to properties and the surface rights necessary for operations; and the Company's ability to comply with environmental, health and safety laws. The foregoing list of assumptions is not exhaustive.

The Company cautions the reader that forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results and developments to differ materially from those expressed or implied by such forward-looking statements contained in this news release and the Company has made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: the timing and content of work programs; results of exploration activities and development of mineral properties; the interpretation and uncertainties of drilling results and other geological data; receipt, maintenance and security of permits and mineral property titles; environmental and other regulatory risks; project costs overruns or unanticipated costs and expenses; availability of funds; failure to delineate potential quantities and grades of the target zones based on historical data; general market and industry conditions; and those factors identified under the caption "Risks Factors" in the Company's most recent Annual Information Form.

Forward-looking statements are based on the expectations and opinions of the Company's management on the date the statements are made. The assumptions used in the preparation of such statements, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date the statements were made. The Company undertakes no obligation to update or revise any forward-looking statements included in this news release if these beliefs, estimates and opinions or other circumstances should change, except as otherwise required by applicable law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

For Further Information, Contact:

Andrew Pollard
President and Chief Executive Officer
(604) 817-6044
info@blackrocksilver.com

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/255788

FAQ

What were the key drilling results from Blackrock Silver's Tonopah West project?

Key results include TXC25-139 with 9.05m at 367 g/t AgEq and TXC25-150 with 2.84m at 671.5 g/t AgEq, with continuous mineralization established over 350 meters

How many drillholes were completed in BKRRF's M&I Conversion Program?

The program consisted of 62 drillholes totaling 12,580 meters (41,271 feet) within the shallow southern portion of the Bermuda-Merten vein group

What percentage of Blackrock Silver's drilling returned significant values?

65% of the drilling returned values above 150 g/t AgEq cutoff, with no completely barren holes in the campaign

When will Blackrock Silver release the updated mineral resource estimate for Tonopah West?

The updated mineral resource estimate is expected to be completed in Q3 2025

What is the significance of the new near-surface zones discovered at Tonopah West?

The new near-surface zones contain ultra-high-grade gold and silver mineralization, representing meaningful new tonnage potential for the project
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Blackrock Silver Corp

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BKRRF Latest News

May 15, 2025
Blackrock Silver Begins Placement of Hydrologic Monitoring Wells at Tonopah West
May 8, 2025
Blackrock Drills 4.2m of 700 g/t AgEq (Including 0.3m of 3,182 g/t AgEq) and Reports Multiple +1 kg/t AgEq Intercepts at Tonopah West
May 2, 2025
Blackrock Silver Announces Filing of Amended Tonopah West Technical Report
Mar 31, 2025
Blackrock Silver Steps Out 1.2km Across New High-Grade Zone at Tonopah West
Mar 7, 2025
Blackrock Silver Engages ICP Securities for Automated Market Making Services

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