Heritage Mining plans Drayton-Black Lake exploration
2025-09-11 10:51 ET – News Release
Mr. Peter Schloo reports
HERITAGE MINING PLANS AGGRESSIVE PROGRAM AT ZONE 3 EXTENSION MEGA-QUARTZ VEIN SYSTEM AT ITS FLAGSHIP DRAYTON-BLACK LAKE PROJECT
Heritage Mining Ltd. has provided an exploration update on the Zone 3 extension megaquartz vein system at its flagship Drayton-Black Lake project (DBL), which has confirmed broad gold zone within a newly discovered, approximately 74-metre-wide quartz vein system (true width unknown) associated with a magnetic anomaly that extends for approximately four kilometres along strike length and is up to 200 metres in width at its flagship Drayton-Black Lake project (see Sept. 9, 2025, press release).
DBL exploration program highlights:
- Aggressive soil/till orientation survey over Zone 3 extension area;
- Follow-up soil/till survey — success based on orientation survey expected Q4 2025;
- Outcrop/vein stripping permit received above HML25-013;
- Initiate a structural study of the megaquartz vein system;
- Diamond drilling in Q4 2025/Q1 2026.
« We are eager to further explore the newly discovered Zone 3 extension megaquartz vein structure systematically. Our team has developed a comprehensive approach to further exploring this area as well as broader exploration programs before winter. I would like to thank the exploration team for their strong efforts in the discovery of a such wide vein system, » commented Peter Schloo, president, chief executive officer and a director of Heritage Mining.
Discussion of exploration program
Soil/till program
The purpose of the soil and till program is to rapidly evaluation the newly identified Zone 3 extension megaquartz vein structure as well as a broader evaluation of Alcona, Zone 10, Zone 3 and New Millennium with a terrain-aware B-horizon program. Bias sampling toward stable, well-drained eluvial-illuvial positions where podzolic Bf/Bh horizons preserve pathfinder chemistry. Soil/till program will be solidified following an orientation survey of key areas. The outcome of this program is to identify pathfinders for each target defined and identify near surface mineralization footprint across target areas.
Stripping and structural evaluation
The company has received a stripping permit for the area above HML25-013 along the newly identified Zone 3 extension megaquartz vein structure. Stripping this area with follow-on sampling and structural evaluations are planned for the company’s 2025 exploration program at DBL. The result of this program is to further evaluate the structural discovery at surface to better prioritize further targeting methods.
Scout diamond drilling
Additional scout diamond drilling is planned for the 2025 exploration program at the newly identified Zone 3 extension megaquartz vein structure. Following the completion of soil/till program and stripping and structural evaluation, the company intends to commence scout drilling with additional data. The company may initiate the scout drilling program earlier depending on additional internal evaluation.
Conclusion
The discovery of a broad gold zone in the newly identified Zone 3 extension megaquartz vein structure warrants additional systemic exploration to further develop the company’s discovery model.
Qualified person
Stephen Hughes, PGeo, strategic adviser for the company, serves as a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects, and has reviewed the scientific and technical information in this news release, approving the disclosure herein.
Technical program
Heritage Mining adheres to a strict quality assurance/quality control protocol for handling, sampling, sample transportation and analyses. Chain-of-custody protocols are designed to ensure security of samples until their delivery at the laboratory.
Sampling, subsampling and laboratory analysis for Heritage Mining’s Drayton-Black Lake project
All drilling at the Drayton-Black Lake project recovers NQ core. Drill core is systematically split in half using a diamond saw. A qualified geologist examines the drill core, marking intervals for sampling and indicating the cutting line. Sample lengths are typically 1.0 metre, adjusted to a minimum length of 0.5 metre as necessary to respect lithological and/or mineralogical contacts and to isolate narrow veins or structures that may contain higher-grade mineralization.
Technicians saw the core along the cutting lines determined by the geologist. One-half of the core is retained as a witness sample while the other half is submitted for analysis. Individual sample bags are securely sealed and placed into sealed bags, which are then clearly marked with their contents.
Heritage Mining submits samples for gold determination by PhotonAssay to ALS Canada Ltd. ALS operates under a commercial contract with Heritage Mining.
Drill core samples are shipped to ALS for sample preparation at its facilities in Thunder Bay, Ont. ALS is an ISO/IEC 17025:2017-accredited laboratory for the PhotonAssay method in addition to a variety of diverse metal determination methods.
Analytical procedures
The ALS procedure for PhotonAssay involves lab applying preparation codes LOG-21 (sample logging by bar code), CRU-31 (fine crushing so that 70 per cent passes through a two-millimetre screen) and SPL-32a (rotary splitting of a representative approximately 500-gram subsample) followed by analytical code Au-PA01, which is a non-destructive gold analysis method using high-energy X-rays with a gold detection range from 0.03 part per million to 350 parts per million.
After gold assays are returned, Heritage then may choose to perform multielement assays on selected samples based on the gold results. In these cases, sample preparation codes FND-05 (locate and use remaining crushed material from Au-PA01) and PUL-32m (pulverization so that greater than 85 per cent passes 75-micrometre screen) are then applied followed by analytical code ME-MS61 (multielement ICP-MS analysis for base metals, pathfinder elements, lithophile elements and rare earth elements).
Quality assurance/quality control (QA/QC)
The drill program design, QA/QC and interpretation of results are performed by qualified persons employing a rigorous QA/QC program consistent with industry best practices. Standards and blanks account for a minimum of 10 per cent of the samples, in addition to the laboratories’ internal quality assurance programs.
Quality control data are meticulously evaluated upon receipt from the laboratories for any failures. Appropriate corrective action is taken if assay results for standards and blanks fall outside allowed tolerances. All results disclosed by Heritage Mining have successfully passed the company’s stringent quality control protocols.
The company does not recognize any factors of drilling, sampling or recovery that could materially affect the accuracy or reliability of the assay data disclosed. The assay data disclosed in this press release have been verified by the company’s qualified person against the original assay certificates.
Heritage Mining notes that it has not completed any economic evaluations of its Drayton-Black Lake project, and the project does not currently have any resources or reserves.
About Heritage Mining Ltd.
The company is a Canadian mineral exploration company advancing its two high-grade gold-silver-copper projects in Northwestern Ontario. The Drayton-Black Lake and the Contact Bay projects are located near Sioux Lookout in the underexplored Eagle-Wabigoon-Manitou greenstone belt. Both projects benefit from a wealth of historic data, excellent site access and logistical support from the local community.