Heritage Mining Announces Positive Drilling Results at Melba Project

VANCOUVER, BC — April 16, 2026 — Leads & Copy —

Heritage Mining Ltd. (CSE: HML FRA: Y66) has announced encouraging results from its ongoing drilling program at the Melba Project, including multiple visible gold occurrences. Partial assays from drill hole ML3840-003 revealed 22 grams per ton of gold over 0.50 meters from 79 meters, as well as two broader, lower-grade intersections of 0.21 g/t Au over 6.9 meters (from 9 meters) and 0.23 g/t Au over 6.1 meters (from 69.9 meters).

In the most recent drill hole M3855-001 (assays pending), Heritage geologists identified three occurrences of coarse gold over a 30-meter interval containing multiple quartz veins.

Peter Schloo, President, CEO and Director of Heritage Mining, commented on the emerging high-grade nature of the Melba system. He noted that the multiple visible gold occurrences in ML3855-001 and recent assays grading up to 22.0 g/t Au over 0.5 meters are promising. According to Schloo, by extending holes ML3800-001 and ML3800-002 beyond the Blue Vein, the company is now testing a potential stacked vein system. He added that drill hole M3855-001 is impressive, and he believes this is part of a much larger mineralized system at Melba.

The company also announced an expansion of the planned drilling program at Melba, targeting three historical gold-bearing veins (Mike Vein, Rolling Vein, and the Contact Vein) southwest of the Blue Vein. Historical reports and maps indicate visible gold occurrences at all four veins (Blue Vein, Mike Vein, Rolling Vein, and Contact Vein), and newly designed holes bisect all veins.

Further to the press release dated March 2, 2025, the top of hole ML3850-004 returned encouraging results including 1.26 g/t Au over 7 meters from 47 meters, including 6.33 g/t Au over 1 meter Au and 1.89 g/t Au over 1 meter, and prior assays of 0.5 g/t Au over 6 meters from 83 meters.

Melba, is located approximately 22 kilometers northeast of Kirkland Lake and 90 kilometers southeast of Timmins in Northeastern Ontario, Canada. The project is comprised of approximately 3,886 hectares. Melba lies along the Ross Fault, a splay off of the Porcupine-Destor Fault Zone, and is associated with development stage and historic producing gold mines, including McEwen Mine (Grey Fox Mine, +1Moz Au) approximately 22 kilometers away, and the Ross Mine (+1Moz Au) approximately 16 kilometers away.

Heritage Mining adheres to a strict QA/QC protocol for handling, sampling, sample transportation, and analyses. Drill core was boxed, covered, and sealed at the drill rig site and transported to the onsite logging facility. Drill core is systematically cut in half using a diamond saw. A qualified geologist examines the drill core, marking intervals for sampling. Sample lengths are typically 1.0 meter, adjusted to a minimum length of 0.5 meter as necessary to respect lithological and/or mineralogical contacts and to isolate narrow veins or structures that may contain higher-grade mineralization. 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 rice bags.

Heritage Mining submits samples for gold determination by PhotonAssay to Paragon Geochemical - Timmins, an ISO/IEC 17025:2017 accredited laboratory. The Paragon procedure for PhotonAssay involves lab applying preparation codes INV-SAM (sample logging via barcode), PREP-PKG (weigh, dry at 100C, crushing to 70% passing 2mm, riffle split ~500g into a PA jar and 250g for pulverization to 85% passing 75 micron) 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 0.015 ppm to 350ppm. After gold assays are returned, Heritage then may choose to perform multi-element assays on selected samples based on the gold results first with Paragon. In these cases, an aliquot is taken from the previously prepared 250g split for analysis by 48MA-MS (4 acid digestion followed by multi-element ICP-MS analysis for a 48 element suite).

Stephen Hughes, P Geo, Strategic Advisor for the Company, serves as a qualified person as defined by National Instrument 43-101 and has reviewed the scientific and technical information in this news release.

Heritage Mining Ltd. is a Canadian mineral exploration company advancing its Ontario Project Portfolio in Northwestern and Northeastern Ontario. The Drayton-Black Lake, Contact Bay and Scattergood projects are located near Sioux Lookout. The Melba Property is located near Ramore, Ontario.

Source: Heritage Mining Ltd.