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MacDonald Mines Exploration Ltd. (BMK.V)

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    • MacDonald Mines Hits 7.18 g/t gold over 13.23 m, including 41.44 g/t gold over 1.09 m and 22.60 g/t gold over 1.00 m
      GlobeNewswire

      MacDonald Mines Hits 7.18 g/t gold over 13.23 m, including 41.44 g/t gold over 1.09 m and 22.60 g/t gold over 1.00 m

      Figure 2 Collar locations and drilling highlights to date Figure 1 Long section showing reported holesTORONTO, Nov. 19, 2020 (GLOBE NEWSWIRE) -- MacDonald Mines Exploration Ltd. (TSX-V: BMK) (“MacDonald Mines”, “MacDonald” or the “Company”) reports further assay results from its ongoing 2020 drilling program at the SPJ Property, located 40 km east of Sudbury, Ontario. Hole SM-20-065 intersected, near-surface, 7.18 g/t gold over 13.23 metres, including 41.44 g/t gold over 1.09 metres and 22.60 g/t gold over 1.00 metre, further expanding the high-grade gold mineralization of the Scadding Deposit (Figure 1). Drilling continues with approximately 7,548 metres of the 14,000 metres program completed and 74 holes drilled to date (Figure 2). Further assay results are forthcoming and will be released as they are received. Holes SD-20-058 and SD-20-059 of the program also revealed broad zones of gold mineralization west of the Scadding Deposit, in an area that has seen little exploration in the past. Hole 59 intersected a broad zone of gold mineralization in the Bristol/Monaco corridor that further supports the extension of gold mineralization, beyond the current footprint of the Scadding Mine, between the mine and the South Pit.MacDonald’s focus through December 2020 is to continue drilling the large exploration gaps that exist between the Scadding underground mine and both the North Pit and South Pit areas.Quentin Yarie, MacDonald’s President and CEO stated, “We continue to drill new zones of high-grade gold mineralization in the Bristol/Monaco deformation zone, confirming how we can expand the historic Scadding Deposit. Results are suggesting that a parallel corridor of gold mineralization exists to the west within the Bristol Breccia which extends over a strike of 200 metres and remains open in all directions. We are starting to see indications of chlorite alteration that could be indicative of further undiscovered zones of higher-grade gold mineralization in the Bristol Breccia structure. While drilling continues, we are utilizing the results of our recent IP surveys to further guide the deposit expansion drill program.”Figure 1. Long section showing reported holes is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/3f431705-86d5-4d0b-825e-a3fa594ba015Table 1. Assay highlights from reported holesHole From (m)To (m)Length* (m)Visible Gold ObservedGold (g/t)     SM-20-057 113.9115.171.27Yes0.71  SM-20-058 150.53158.077.54 0.64   162.48176.313.82 0.83  SM-20-059 70.73732.27 2.41   77.8185.637.82 0.98   161.04168.577.53 1.38  SM-20-064No significant results   SM-20-065 417.2313.23yes7.18  including9.110.191.09yes41.44  and13.6914.691 22.6   165.24171.326.08 0.44  SM-20-066Intersected the Scadding Mine – Stopped before reaching the targeted zone   * Assay results presented over core length. They are estimated to represent 55-85% of true width. Table 2. Coordinates of reported holesHole IDEastingNorthingElevationAzimuthDipDepth (m) SM-20-0575292965166471310.9269-55250 SM-20-0585292245166492316303-46202 SM-20-0595292275166416310.6272-48202 SM-20-0645291885166356309.5270-76130 SM-20-0655291515166474321252-48196 SM-20-0665292475166491313295-5870 Figure 2. Collar locations and drilling highlights to date is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/fe33d44b-032c-498a-a7c6-e4fab8de238bDetailed DescriptionHole SM-20-057 was testing the continuity of the Bristol/Monaco Structure beyond the underground workings of the Scadding Mine. Hole 57 successfully intersected the deeper extension of the structure with a zone, approximately 16 metres-wide, of pervasive magnetite alteration with an elevated background in gold. Hole 57 also intersected a narrow zone of chlorite alteration, with specks of visible gold, in a satellite structure located in the Scadding Mine.Hole SM-20-058 was testing the northern extension of the mineralization zones at the Scadding Mine. Hole 58 successfully intersected a zone of chlorite alteration in which visible gold was observed, but this did not return significant gold assays. Hole 58 also intersected a large breccia zone, west of the Scadding Mine, the Bristol Breccia where gold mineralization is associated with pervasive dissemination of pyrite in a silica-rich breccia matrix.Hole SM-20-059 was testing the Bristol/Monaco Structure between the Scadding Mine and the South pit and successfully intersected a zone of chlorite-magnetite alteration in the structure, suggesting the potential continuity of mineralization between the South Pit and the Scadding Mine. Additionally, hole 59 discovered a new zone of gold mineralization west of the Bristol/Monaco Structure likely associated with the Bristol Breccia. Gold mineralization in that new zone occurs as pervasive disseminations of pyrite associated with silica-carbonate alteration. Rims of chlorite around some of the carbonates suggest that zones of chlorite alteration, typically associated with higher-grade gold mineralization, could be present in that new structural corridor west of the Scadding Deposit.Hole SM-20-064 was testing the deeper extension of gold mineralization in the South Pit area. Hole 64 successfully intersected the extension of the structure characterized by pervasive magnetite alteration, but that extension did not contain significant gold mineralization.Hole SM-20-065 was testing a zone of chlorite alteration exposed at surface between the Scadding Mine and the South Pit. Hole 65 demonstrated that significant gold mineralization and near-surface zones of chlorite alteration are left to be discovered at the Scadding Mine and between the mine’s current footprint and the South Pit. Additionally, hole 65 intersected a zone of low-grade gold mineralization in the Bristol Breccia west of the Bristol-Monaco structural trends of the Scadding Deposit.Hole SM-20-066 was testing the northern extension of the structures controlling chlorite alteration and gold mineralization in the Scadding Mine. The hole was stopped before reaching target as it intersected the underground workings of the Scadding Mine.On-site Quality Assurance/Quality Control (“QA/QC”) Measures Drill core samples were transported in security-sealed bags for analyses to Actlabs in Ancaster, Ontario. Individual samples are labeled, placed in plastic sample bags and sealed. Groups of samples are then placed into durable rice bags and then shipped. The samples transported to Actlabs were dropped in rice bags with security seals by Manitoulin Transport. The remaining coarse reject portions of the samples remain in storage in case further work or verification is needed.MacDonald has implemented a quality-control program to comply with best practices in the sampling and analysis of drill core. As part of its QA/QC program, MacDonald inserts external gold standards (low to high grade) and blanks every 20 samples in addition to random standards, blanks, and duplicates. All samples over 10 g/t gold or the samples with abundant visible gold are analysed by 1 kilogram metallic screen. Check assays are routinely performed for samples with visible gold to ascertain the gold content of the mineralization zone.SPJ Property Highlights * 100% ownership * 18,340 hectares in excellent mining jurisdiction and close to infrastructure * Hosts the high-grade past producing Scadding Gold Mine * Evidence of polymetallic mineralization at the Scadding Deposit indicative of IOCG potential * Significant gold, cobalt, copper, silver, nickel and rare earth showings outside of the Scadding Deposit footprint Historically, the Scadding Mine produced 914 kilograms of gold from 127,000 tonnes of mineralized material grading 7.2 g/t (OFR 5771). MacDonald’s reinterpretation of the geological model at the Scadding Deposit and larger SPJ property indicates that it could host a gold-rich Iron-Oxide-Copper-Gold deposit and that significant gold bearing structures have been missed by previous operators’ exploration campaigns (2009-2011).Qualified Person Quentin Yarie, P Geo., CEO and President of MacDonald Mines and the Qualified Person as defined by National Instrument 43-101 has reviewed and approved the technical information in this news release.COVID-19 Precautions MacDonald Mines has developed and implemented precautions and procedures that are compliant with Ontario’s health guidelines. Strict protocols are in place to ensure the safety of all staff, thereby reducing the potential for community contact and spreading of the virus.About MacDonald Mines Exploration Ltd. MacDonald Mines Exploration Ltd. is a mineral exploration company headquartered in Toronto, Ontario focused on gold exploration in Canada. The Company is focused on developing its large SPJ Project in Northern Ontario.The Company's common shares trade on the TSX Venture Exchange under the symbol "BMK".To learn more about MacDonald Mines, please visit www.macdonaldmines.com For more information, please contact:Quentin Yarie, President & CEO, (416) 364-4986, qyarie@macdonaldmines.comOr Mia Boiridy, Investor Relations, (416) 364-4986, mboiridy@macdonaldmines.comNeither 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.This News Release contains forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may”, “should”, “expects”, “plans”, “anticipates”, “believes”, “estimates”, “predicts”, “potential” or “continue” or the negative of these terms or other comparable terminology. These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause our or our industry’s actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

    • CORRECTION -- MacDonald Mines Exploration Ltd.
      GlobeNewswire

      CORRECTION -- MacDonald Mines Exploration Ltd.

      Figure 1. Longitudinal section showing reported assay results Figure 2. Assay highlights from reported holesTORONTO, Nov. 10, 2020 (GLOBE NEWSWIRE) -- In a release issued earlier today for MacDonald Mines Exploration Ltd. (TSX-V: BMK), please note that the gold drilling results in the headline have been corrected from "17.60 m of 3.90 g/t gold and 10.29 m of 4.75 g/t gold" to "17.06 m of 3.90 g/t gold and 4.75 m of 10.29 g/t gold". The corrected release follows:MacDonald Mines Drills 17.06 m of 3.90 g/t gold and 4.75 m of 10.29 g/t gold in the southern extension of the Scadding DepositMacDonald Mines Exploration Ltd. (TSX-V: BMK) (“MacDonald Mines”, “MacDonald” or the “Company”) announces further assay results from its ongoing 14,000 metres 2020 drilling program at the SPJ Property, located 40 km east of Sudbury, Ontario. Highlights include: * 3.90 g/t gold over 17.06 metres, including 20.54 g/t gold over 1.00 metre and 17.61 g/t gold over 1.19 metres in hole SD-20-062 and, * 10.29 g/t over 4.75 metres, including 19.50 g/t gold over 0.92 metres and 10.65 g/t gold over 1.04 metres in SD-20-063Both holes 62 and 63 targeted the southernmost known extension of gold mineralization in the South Pit area. These latest results suggest that mineralization in the Scadding Mine potentially connects with mineralization in the South Pit area. To date, the high-grade gold mineralization in the Bristol/Monaco corridor extends over a strike length of 400 metres between the North and South pits (Figure 1). MacDonald’s drilling focus through December will be on the large exploration gaps that exist between the Scadding underground mine and both the North Pit and South Pit areas.Figure 1. Longitudinal section showing reported assay results is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/a0a1d2db-c4ec-40c8-9164-6ce8ebe64a94Quentin Yarie, MacDonald’s President and CEO stated, “As we continue our 2020 drilling program, these latest results indicate that the Bristol/Monaco deformation zone forms the most favourable geological target to expand the Scadding Deposit. We have now uncovered several new areas and drill targets for potential high-grade gold mineralization in this zone. We will also look to expand the potential around the South Pit area with drilling through to the end of the year.” “Holes 50 to 55 targeted the newly discovered Monza fold structure southeast of the Scadding Mine. While little gold mineralization was intersected in the samples received to date, all five holes show alteration and structures characteristic of the Scadding Deposit. Once results from all pending samples are received, we will be able to evaluate what follow-up work is required in the Monza Structure and identify future drilling targets in the area.”Table 1. Assay highlights from reported holesHole  From (m) To (m) Length* (m) Visible Gold Observed Gold (g/t) Standard assay (half core)Check assay (quarter core) SM-20-047  57.1660.002.84 0.70   78.3580.261.91yes1.23  SM-20-048  133.47137.103.63yes1.54  including134.30135.130.83yes0.709.04 and136.11137.100.99yes4.367.17 SM-20-049  31.8243.6211.80 0.71   49.1451.732.59yes1.34  including49.9150.680.77yes2.795.71 SM-20-050 No significant results SM-20-051 No significant results SM-20-052 No significant results SM-20-053 No significant results SM-20-054 No significant results SM-20-055 No significant results SM-20-062  30.0047.0617.06yes3.90  including30.8832.191.31yes7.38  and39.4040.401.00 20.54  and42.5543.741.19 17.61  SM-20-063  43.1447.894.75yes10.29  including43.1444.141.00yes7.241.12 and45.0846.000.92 19.50  and46.0047.041.04 10.65  and47.0447.890.85yes9.82  * Assay results presented over core length. They are estimated to represent 75-85% of true width.Re-Assaying of Intersections with Visible Gold Building on MacDonald’s past experience with “the nugget effect” at the Scadding Deposit, the Company re-analyzed some of the intersections where visible gold was observed in the North and South Pit areas. Both sets of assays (where applicable) are shown in Table 1. One sample is from half of the core, which is consistent with CIM Mineral Exploration Best Practice Guidelines, whereas the “Check assay” is from quarter core. The latter is presented here to illustrate the range of variability of the gold grade within the same core sample.MacDonald recognizes that quarter core sampling is not consistent with CIM Mineral Exploration Best Practice Guidelines. However, the volume of rock represented by one quarter of HQ diameter drill core, the core size used by MacDonald, is equivalent to 89% of the volume of rock represented by one half of NQ diameter drill core. NQ drill core is the current industry standard for mineral exploration.This comparison indicates that the volume of rock in one quarter of HQ diameter drill core remains representative of the mineralization zone, and the Company considers that the grade variability illustrated by the quarter core samples is of interest for the accurate quantification of the core’s gold content. It is also important to note that this process is a standard method utilized to confirm assays when an independent party is calculating a resource estimate.Table 2. Coordinates of reported holesHole IDEastingNorthingElevationAzimuthDipDepth (m) SM-20-0475292085166659311.4301-5794 SM-20-0485292245166682309.2187-66157 SM-20-0495291655166661310.7298-45112 SM-20-0505296555166442290.4204-48160 SM-20-0515297305166396289.26220-45136 SM-20-0525297395166442294.3219.9-60184 SM-20-0535297815166457289.0214.6-45181 SM-20-0545297815166459291.1215-56181 SM-20-0555297695166395289.2220-45124 SM-20-0565293435166511313.7145-45124 SM-20-0625291865166356306.4245-50142 SM-20-0635291885166356306.4215-75106 Detailed DescriptionTo date the Company has completed more than 7,000 metres of drilling in its ongoing 14,000 metres 2020 drilling program (Figure 2).Figure 2. Drilling to date and assay highlights is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/d3bdac6b-effb-44e7-a104-5a78d05dd0c9Hole SM-20-047 was testing the continuity of the Bristol/Monaco Structure between SM-19-001 and SM-19-004. It successfully intersected two zones of strong chlorite alteration characteristic of the Scadding Deposit, including one with visible gold, but these zones of chlorite alteration did not contain significant gold mineralization.Hole SM-20-048 was testing the interpreted projection at depth of the Bristol/Monaco Structure, 30 metres south of the gold intersection in SM-20-035 (4.4 g/t gold over 4.80 m – see news release of May 11, 2020). The hole intersected the extension of the structure and strong chlorite alteration with two occurrences of visible gold in the intersection.Hole SM-20-049 was testing the extension of the chlorite zones of the North Pit, west of a diabase dyke, that crosscut mineralization in the North Pit area. The hole intersected two zones of chlorite alteration and shows that gold mineralization associated with chlorite alteration remains open to the northwest of the diabase dyke.Holes SM-20-050 to SM-20-055 were testing the Monza fold structure, at the contact between the Serpent and Espanola formation, in the extensions of the zone discovered in SM-20-046 and modelled with IP. The holes successfully intersected strong magnetite alteration, chlorite alteration and extensive zones of pyrite with accessory chalcopyrite mineralization that are characteristic of the Scadding Deposit. However, results from samples received do not contain significant gold mineralization. While this indicates that IP is successfully tracing the alteration system that can host significant zones of gold mineralization, MacDonald is refining the systematic relationship between the induced polarization and resistivity measurements to better identify where gold mineralization may be present.Hole SM-20-056 was testing mineralization in the Villeneuve Structure near the New Zone of the Scadding Deposit, an area located between the Scadding Mine and the E-W Pit. The hole did not intersect significant chlorite alteration nor gold mineralization.Hole SM-20-062 was testing the outer edge of the known extension of gold mineralization in the South Pit area, in an area that had not been densely drilled by previous operators. The hole targeted the southernmost known extension of the Bristol/Monaco Structure before its intersection with the Espanola limestone and the projected bend of gold mineralization in an E-W orientation. It successfully intersected a significant zone of strong chlorite alteration that is associated with gold mineralization.Hole SM-20-063 was testing the extension of gold mineralization intersected in SM-20-062 in the South Pit area, again in an area that had not been densely drilled previously by other operators. The hole targeted the southernmost known extension of the Bristol/Monaco Structure before its intersection with the Espanola limestone. It successfully intersected a significant zone of strong chlorite alteration that is associated with gold mineralization.On-site Quality Assurance/Quality Control (“QA/QC”) Measures Drill core samples were transported in security-sealed bags for analyses to Actlabs in Ancaster, Ontario. Individual samples are labeled, placed in plastic sample bags and sealed. Groups of samples are then placed into durable rice bags and then shipped. The samples transported to Actlabs were dropped in rice bags with security seals by Manitoulin Transport. The remaining coarse reject portions of the samples remain in storage in case further work or verification is needed.MacDonald has implemented a quality-control program to comply with best practices in the sampling and analysis of drill core. As part of its QA/QC program, MacDonald inserts external gold standards (low to high grade) and blanks every 20 samples in addition to random standards, blanks, and duplicates. All samples over 10 g/t gold or the samples with abundant visible gold are analysed by 1 kilogram metallic screen. Check assays are routinely performed for samples with visible gold to ascertain the gold content of the mineralization zone.SPJ Property Highlights * 100% ownership * 18,340 hectares in excellent mining jurisdiction and close to infrastructure * Hosts the high-grade past producing Scadding Gold Mine * Evidence of polymetallic mineralization at the Scadding Deposit indicative of IOCG potential * Significant gold, cobalt, copper, silver, nickel and rare earth showings outside of the Scadding Deposit footprint Historically, the Scadding Mine produced 914 kilograms of gold from 127,000 tonnes of mineralized material grading 7.2 g/t (OFR 5771). MacDonald’s reinterpretation of the geological model at the Scadding Deposit and larger SPJ property indicates that it could host a gold-rich Iron-Oxide-Copper-Gold deposit and that significant gold structures may have been missed by previous operators’ drilling campaigns (2009-2011).Qualified Person Quentin Yarie, P Geo., CEO and President of MacDonald Mines and the Qualified Person as defined by National Instrument 43-101 has reviewed and approved the technical information in this news release.COVID-19 Precautions MacDonald Mines has developed and implemented precautions and procedures that are compliant with Ontario’s health guidelines. Strict protocols are in place to ensure the safety of all staff, thereby reducing the potential for community contact and spreading of the virus.About MacDonald Mines Exploration Ltd. MacDonald Mines Exploration Ltd. is a mineral exploration company headquartered in Toronto, Ontario focused on gold exploration in Canada. The Company is focused on developing its large SPJ Project in Northern Ontario.The Company's common shares trade on the TSX Venture Exchange under the symbol "BMK".To learn more about MacDonald Mines, please visit www.macdonaldmines.com For more information, please contact:Quentin Yarie, President & CEO, (416) 364-4986, qyarie@macdonaldmines.comOr Mia Boiridy, Investor Relations, (416) 364-4986, mboiridy@macdonaldmines.comNeither 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.This News Release contains forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may”, “should”, “expects”, “plans”, “anticipates”, “believes”, “estimates”, “predicts”, “potential” or “continue” or the negative of these terms or other comparable terminology. These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause our or our industry’s actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

    • MacDonald Mines Drills 17.60 m of 3.90 g/t gold and 10.29 m of 4.75 g/t gold in the Southern Extension of the Scadding Deposit
      GlobeNewswire

      MacDonald Mines Drills 17.60 m of 3.90 g/t gold and 10.29 m of 4.75 g/t gold in the Southern Extension of the Scadding Deposit

      Figure 1. Longitudinal section showing reported assay results Figure 2. Assay highlights from reported holesTORONTO, Nov. 10, 2020 (GLOBE NEWSWIRE) -- MacDonald Mines Exploration Ltd. (TSX-V: BMK) (“MacDonald Mines”, “MacDonald” or the “Company”) announces further assay results from its ongoing 14,000 metres 2020 drilling program at the SPJ Property, located 40 km east of Sudbury, Ontario. Highlights include: * 3.90 g/t gold over 17.6 metres, including 20.54 g/t gold over 1.00 metre and 17.61 g/t gold over 1.19 metres in hole SD-20-062 and, * 10.29 g/t over 4.75 metres, including 19.50 g/t gold over 0.92 metres and 10.65 g/t gold over 1.04 metres in SD-20-063Both holes 62 and 63 targeted the southernmost known extension of gold mineralization in the South Pit area. These latest results suggest that mineralization in the Scadding Mine potentially connects with mineralization in the South Pit area. To date, the high-grade gold mineralization in the Bristol/Monaco corridor extends over a strike length of 400 metres between the North and South pits (Figure 1). MacDonald’s drilling focus through December will be on the large exploration gaps that exist between the Scadding underground mine and both the North Pit and South Pit areas.Figure 1. Longitudinal section showing reported assay results is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/a0a1d2db-c4ec-40c8-9164-6ce8ebe64a94Quentin Yarie, MacDonald’s President and CEO stated, “As we continue our 2020 drilling program, these latest results indicate that the Bristol/Monaco deformation zone forms the most favourable geological target to expand the Scadding Deposit. We have now uncovered several new areas and drill targets for potential high-grade gold mineralization in this zone. We will also look to expand the potential around the South Pit area with drilling through to the end of the year.” “Holes 50 to 55 targeted the newly discovered Monza fold structure southeast of the Scadding Mine. While little gold mineralization was intersected in the samples received to date, all five holes show alteration and structures characteristic of the Scadding Deposit. Once results from all pending samples are received, we will be able to evaluate what follow-up work is required in the Monza Structure and identify future drilling targets in the area.”Table 1. Assay highlights from reported holesHole  From (m) To (m) Length* (m) Visible Gold Observed Gold (g/t) Standard assay (half core)Check assay (quarter core) SM-20-047  57.1660.002.84 0.70   78.3580.261.91yes1.23  SM-20-048  133.47137.103.63yes1.54  including134.30135.130.83yes0.709.04 and136.11137.100.99yes4.367.17 SM-20-049  31.8243.6211.80 0.71   49.1451.732.59yes1.34  including49.9150.680.77yes2.795.71 SM-20-050 No significant results SM-20-051 No significant results SM-20-052 No significant results SM-20-053 No significant results SM-20-054 No significant results SM-20-055 No significant results SM-20-062  30.0047.0617.06yes3.90  including30.8832.191.31yes7.38  and39.4040.401.00 20.54  and42.5543.741.19 17.61  SM-20-063  43.1447.894.75yes10.29  including43.1444.141.00yes7.241.12 and45.0846.000.92 19.50  and46.0047.041.04 10.65  and47.0447.890.85yes9.82  * Assay results presented over core length. They are estimated to represent 75-85% of true width.Re-Assaying of Intersections with Visible Gold Building on MacDonald’s past experience with “the nugget effect” at the Scadding Deposit, the Company re-analyzed some of the intersections where visible gold was observed in the North and South Pit areas. Both sets of assays (where applicable) are shown in Table 1. One sample is from half of the core, which is consistent with CIM Mineral Exploration Best Practice Guidelines, whereas the “Check assay” is from quarter core. The latter is presented here to illustrate the range of variability of the gold grade within the same core sample.MacDonald recognizes that quarter core sampling is not consistent with CIM Mineral Exploration Best Practice Guidelines. However, the volume of rock represented by one quarter of HQ diameter drill core, the core size used by MacDonald, is equivalent to 89% of the volume of rock represented by one half of NQ diameter drill core. NQ drill core is the current industry standard for mineral exploration.This comparison indicates that the volume of rock in one quarter of HQ diameter drill core remains representative of the mineralization zone, and the Company considers that the grade variability illustrated by the quarter core samples is of interest for the accurate quantification of the core’s gold content. It is also important to note that this process is a standard method utilized to confirm assays when an independent party is calculating a resource estimate.Table 2. Coordinates of reported holesHole IDEastingNorthingElevationAzimuthDipDepth (m) SM-20-0475292085166659311.4301-5794 SM-20-0485292245166682309.2187-66157 SM-20-0495291655166661310.7298-45112 SM-20-0505296555166442290.4204-48160 SM-20-0515297305166396289.26220-45136 SM-20-0525297395166442294.3219.9-60184 SM-20-0535297815166457289.0214.6-45181 SM-20-0545297815166459291.1215-56181 SM-20-0555297695166395289.2220-45124 SM-20-0565293435166511313.7145-45124 SM-20-0625291865166356306.4245-50142 SM-20-0635291885166356306.4215-75106 Detailed DescriptionTo date the Company has completed more than 7,000 metres of drilling in its ongoing 14,000 metres 2020 drilling program (Figure 2).Figure 2. Drilling to date and assay highlights is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/d3bdac6b-effb-44e7-a104-5a78d05dd0c9Hole SM-20-047 was testing the continuity of the Bristol/Monaco Structure between SM-19-001 and SM-19-004. It successfully intersected two zones of strong chlorite alteration characteristic of the Scadding Deposit, including one with visible gold, but these zones of chlorite alteration did not contain significant gold mineralization.Hole SM-20-048 was testing the interpreted projection at depth of the Bristol/Monaco Structure, 30 metres south of the gold intersection in SM-20-035 (4.4 g/t gold over 4.80 m – see news release of May 11, 2020). The hole intersected the extension of the structure and strong chlorite alteration with two occurrences of visible gold in the intersection.Hole SM-20-049 was testing the extension of the chlorite zones of the North Pit, west of a diabase dyke, that crosscut mineralization in the North Pit area. The hole intersected two zones of chlorite alteration and shows that gold mineralization associated with chlorite alteration remains open to the northwest of the diabase dyke.Holes SM-20-050 to SM-20-055 were testing the Monza fold structure, at the contact between the Serpent and Espanola formation, in the extensions of the zone discovered in SM-20-046 and modelled with IP. The holes successfully intersected strong magnetite alteration, chlorite alteration and extensive zones of pyrite with accessory chalcopyrite mineralization that are characteristic of the Scadding Deposit. However, results from samples received do not contain significant gold mineralization. While this indicates that IP is successfully tracing the alteration system that can host significant zones of gold mineralization, MacDonald is refining the systematic relationship between the induced polarization and resistivity measurements to better identify where gold mineralization may be present.Hole SM-20-056 was testing mineralization in the Villeneuve Structure near the New Zone of the Scadding Deposit, an area located between the Scadding Mine and the E-W Pit. The hole did not intersect significant chlorite alteration nor gold mineralization.Hole SM-20-062 was testing the outer edge of the known extension of gold mineralization in the South Pit area, in an area that had not been densely drilled by previous operators. The hole targeted the southernmost known extension of the Bristol/Monaco Structure before its intersection with the Espanola limestone and the projected bend of gold mineralization in an E-W orientation. It successfully intersected a significant zone of strong chlorite alteration that is associated with gold mineralization.Hole SM-20-063 was testing the extension of gold mineralization intersected in SM-20-062 in the South Pit area, again in an area that had not been densely drilled previously by other operators. The hole targeted the southernmost known extension of the Bristol/Monaco Structure before its intersection with the Espanola limestone. It successfully intersected a significant zone of strong chlorite alteration that is associated with gold mineralization.On-site Quality Assurance/Quality Control (“QA/QC”) Measures Drill core samples were transported in security-sealed bags for analyses to Actlabs in Ancaster, Ontario. Individual samples are labeled, placed in plastic sample bags and sealed. Groups of samples are then placed into durable rice bags and then shipped. The samples transported to Actlabs were dropped in rice bags with security seals by Manitoulin Transport. The remaining coarse reject portions of the samples remain in storage in case further work or verification is needed.MacDonald has implemented a quality-control program to comply with best practices in the sampling and analysis of drill core. As part of its QA/QC program, MacDonald inserts external gold standards (low to high grade) and blanks every 20 samples in addition to random standards, blanks, and duplicates. All samples over 10 g/t gold or the samples with abundant visible gold are analysed by 1 kilogram metallic screen. Check assays are routinely performed for samples with visible gold to ascertain the gold content of the mineralization zone.SPJ Property Highlights * 100% ownership * 18,340 hectares in excellent mining jurisdiction and close to infrastructure * Hosts the high-grade past producing Scadding Gold Mine * Evidence of polymetallic mineralization at the Scadding Deposit indicative of IOCG potential * Significant gold, cobalt, copper, silver, nickel and rare earth showings outside of the Scadding Deposit footprint Historically, the Scadding Mine produced 914 kilograms of gold from 127,000 tonnes of mineralized material grading 7.2 g/t (OFR 5771). MacDonald’s reinterpretation of the geological model at the Scadding Deposit and larger SPJ property indicates that it could host a gold-rich Iron-Oxide-Copper-Gold deposit and that significant gold structures may have been missed by previous operators’ drilling campaigns (2009-2011).Qualified Person Quentin Yarie, P Geo., CEO and President of MacDonald Mines and the Qualified Person as defined by National Instrument 43-101 has reviewed and approved the technical information in this news release.COVID-19 Precautions MacDonald Mines has developed and implemented precautions and procedures that are compliant with Ontario’s health guidelines. Strict protocols are in place to ensure the safety of all staff, thereby reducing the potential for community contact and spreading of the virus.About MacDonald Mines Exploration Ltd. MacDonald Mines Exploration Ltd. is a mineral exploration company headquartered in Toronto, Ontario focused on gold exploration in Canada. The Company is focused on developing its large SPJ Project in Northern Ontario.The Company's common shares trade on the TSX Venture Exchange under the symbol "BMK".To learn more about MacDonald Mines, please visit www.macdonaldmines.com For more information, please contact:Quentin Yarie, President & CEO, (416) 364-4986, qyarie@macdonaldmines.comOr Mia Boiridy, Investor Relations, (416) 364-4986, mboiridy@macdonaldmines.comNeither 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.This News Release contains forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may”, “should”, “expects”, “plans”, “anticipates”, “believes”, “estimates”, “predicts”, “potential” or “continue” or the negative of these terms or other comparable terminology. These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause our or our industry’s actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.