• Silver Bow Mining began underground exploration drilling Nov. 11, 2026, at its Rainbow Block project in Butte, Montana.
• The program marks the Butte Mining District's first underground exploration drilling in more than three decades.
• Plans call for 30,000 feet of drilling from the Rainbow and Chief Joseph declines through the end of 2027.
• The initial drill station targets extensions of 12 mineralized veins beyond the current resource estimate to support resource expansion and upgrading.
• Initial drilling includes follow-up work on the Badger and Emily veins, where surface drilling identified high-grade mineralization outside the current inferred resource.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Silver Bow Mining Corp. published the original content used to generate this news brief via GlobeNewswire (Ref. ID: 202611110725PRIMZONEFULLFEED9875224) on November 11, 2026, and is solely responsible for the information contained therein.