Vancouver, British Columbia--(Newsfile Corp. - July 9, 2026) - Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910) (the "Company" or "Questcorp") is pleased to announce the completion of the expanded drone magnetic and IP geophysical programs linked to the current drilling at the La Union Project, Sonora, Mexico. Geophysics targeted both known zones and new target areas defined in the H1 2026 surface program prior to drilling. Joint Venture partner Riverside Resources Inc., under the direction of CEO John-Mark Staude, continues to conduct the onsite exploration.
Highlights
A further 248-line kms of drone magnetics were completed, consisting of 193-line kms at 100m line spacings and a further 55-line kms of tie lines. The high-resolution definition survey builds on the 2025 baseline dataset, identifying multiple strong targets.
A further 8-line kms of IP were completed adding to the 4-line kms completed in 2025 and testing multiple existing and new target areas. Data processing is underway to interpret results from the completed drilling, expand targets, and extend the potential for drilling along strike and at depth.
The geophysics will be immediately applied to the active drill program, where the first holes focused on three areas: Union, Union North, and Jabali. 4 holes, totaling 400 metres, have been completed since Phase 1 drilling commenced on June 9th. Sampling continues with 4 holes now at the Zacatecas laboratory.
Initial exploration efforts relied on surface mapping, geochemistry, and past mine activity as a guide. These more robust and expansive geophysical datasets help place Union's discovery potential in a larger regional context, similar to major deposits in Arizona and Sonora where these tools have proven effective at that scale:
Identifying cross structures trending NE and NW which potentially coincide with mapped feeder fault zones for the Carbonate Replacement Deposit ("CRD") and sediment-hosted gold
Situating the outcropping diorite bodies within a larger context to assess their potential scale and their relationship to the known gold-zinc mineralized areas at Union
Improving imaging of structures beneath post-mineral cover, including NW trending structures newly identified by spring 2026 field mapping as potential ore controls and untested targets.
"With the IP survey now complete, combined with the processed aeromagnetic data, we have an expanded view of the Union Project's targets and structural framework, both at depth and along strike from current drilling," said John-Mark Staude, President and CEO, Riverside Resources Inc. "Our teams are in the field continuing Phase 2 drilling, and this data is immediately helping us expand targeting and prioritize the project's robust set of targets. The program is going well, and our teams are processing drill core and sending samples to the laboratory for assays. We're also now using the new geophysics to put our surface geology observations into a mineralization targeting context, helping focus our efforts toward discovering high-grade gold and base metals similar to what was previously mined here, now with geophysics to help image potential source targets at depth."