Green Light Issued for Expanded Drilling at Historic Montana Silver District

SilverBow Resources Inc. (SBOW:NYSE) announced that the Montana Department of Environmental Quality (MT DEQ) issued the company an Authorization to Proceed (AtP) for Amendment 2 (AMD2) to Exploration License No. 00857 at its Rainbow Block project in Butte, Montana. The authorization allows the company to conduct all surface and underground exploration activities outlined in its approved Plan of Operations.

The AtP became effective May 18, 2026, after Silver Bow Mining satisfied regulatory requirements, including posting a US$2,188,039 surety bond for anticipated reclamation costs. The authorization followed MT DEQ's completion of a Final Environmental Assessment on May 8, 2026. According to the company, AMD2 expands the scope of authorized exploration activities at the Rainbow Block, allowing both surface and underground work intended to further define and improve geological understanding of the deposit.

"Receipt of the Authorization to Proceed marks an important milestone for Silver Bow Mining," Chairman and Chief Executive Officer Travis Naugle said in a company news release. "We have completed a thorough environmental review process, satisfied regulatory requirements, and we are now cleared to advance the next phase of exploration at the Rainbow Block."

Silver Bow Mining stated that surface drilling at the Rainbow Block was already underway under Amendment 1, which MT DEQ authorized on October 4, 2021. The company has been drilling at the Missoula and Badger sites under that authorization. AMD2 adds seven new surface drill pad locations and authorizes development of the Rainbow Decline, consisting of a new portal and approximately 6,000 feet of underground development connecting to the existing Lexington Mine shaft at the 400-foot level.

The company noted that the authorization followed several recent developments. Silver Bow Mining completed its initial public offering on the NYSE American on April 30, 2026, with shares trading under the symbol SBMT. On May 4, 2026, the company announced the commencement of surface drilling at the Rainbow Block under AMD1, a program expected to include approximately 25,000 feet of drilling. On May 12, 2026, Silver Bow Mining announced a contract with MES Mining, a division of Mining & Environmental Services LLC, for the rehabilitation and modernization of the existing Chief Joseph portal and underground decline under AMD1. The company stated that MES was mobilizing equipment and materials to Butte, with rehabilitation work anticipated to begin in June.

"The regulatory process confirmed the soundness of our exploration plan and our commitment to responsible operations," Naugle said in a company news release. "We worked constructively with MT DEQ throughout a thorough review, and we appreciate the professionalism of the agency's team."

Silver Demand, Pricing, and Market Access Remained in Focus

According to a May 29 report discussing Bank of America's latest precious metals research, analysts led by Michael Widmer wrote that "while a rally in gold could once again boost silver above US$100/oz. in the coming months, we do not see silver outpacing on a sustained basis due to easing fundamental demand." The report noted that silver had reached US$120 per ounce earlier in the year before retreating below US$75 and highlighted the metal's dual role as both a precious and industrial commodity.

The Bank of America analysts also stated that "as silver prices rose almost exponentially, market participants such as solar PV manufacturers faced immense margin pressure, incentivizing efforts to engineer silver out of industrial products." They further observed that "while we see demand for silver increasing across a range of other sectors, these additions are too small to meaningfully boost industrial demand," pointing to ongoing shifts within industrial consumption patterns.

Silver market data published June 1 showed the metal trading at US$76.64 per ounce. The report described the silver spot price as "the current market price of one troy ounce of silver for immediate delivery" and noted that it served as "the benchmark for pricing silver coins, rounds and bars." The same data showed silver prices had increased 128.22% over the previous 11 months and 168.08% over the previous four years.

Also on June 1, Multi-Commodity Exchange launched Silver 100 futures contracts, allowing market participants to gain exposure to silver in quantities as low as 100 grams. In a regulatory filing, MCX Managing Director and Chief Executive Officer Praveena Rai stated that "The Silver 100 futures contract helps businesses in India's silver industry protect themselves against price volatility." Rai added that "local jewelry businesses can now hedge or take delivery in quantities that are better aligned with their inventory needs." MCX said the contract was introduced in response to market feedback and was intended to broaden participation in silver trading while supporting activity across the silver industry.

Third-Party Coverage Following NYSE American Listing

According to a May 27 report from Research Capital analyst Stuart McDougall, the firm initiated coverage of Silver Bow Mining with a Speculative Buy rating and a US$25.60 per share target price. McDougall described the company as a "Rare Opportunity in Exceptional District" and wrote that the Rainbow Block project contained "an impressive 49Moz of silver, 1.05Blbs of zinc, 287Mlbs of lead, and 0.55Moz of gold in 10Mt." The report stated that "mineralization remains open for potential expansion with further drilling, both from surface and from an extensive network of underground workings."

In the same report, McDougall noted that state and local officials were "clearly supportive of the project, having just approved an amendment to Silver Bow's exploration license that permits another 102,000ft to be drilled in 53 surface holes, among other things." Research Capital maintained a Speculative Buy rating and a US$25.60 target price.

Also on May 27, analysts Matthew O'Keefe and Nicholas Lobo of Cantor Fitzgerald initiated coverage of Silver Bow Mining with a Speculative Buy rating and a US$19.80 per share target price. The analysts wrote that Silver Bow was "a mineral exploration and development company focused on silver-polymetallic targets in Butte, Montana, where it has already established a high-grade resource hosting 125.5 MMoz of silver equivalent (AgEq)." They added that the company's exploration program would include "surface and underground drilling, and underground development."

O'Keefe and Lobo highlighted what they described as a "Large High Grade Silver Resource," stating that the Rainbow Property hosted "an Inferred resource of 125.5 MMoz AgEq with an average grade of 375 g/t AgEq." The report also cited "Significant Exploration Potential," noting that the land package contained "multiple untested and underexplored claim blocks with good potential to significantly increase the resource."

Cantor Fitzgerald maintained its Speculative Buy rating and US$19.80 target price. The analysts wrote that Silver Bow's holdings included a high-grade resource and stated that the company had "started an aggressive exploration and development program that will include surface drilling, underground drilling, and underground development."

Chen Lin of the What's Chen Buying? What's Chen Selling? newsletter wrote on May 28 that Silver Bow Mining was "a new silver kid in town" following its recent IPO, which raised approximately US$60 million at US$11.50 per share. Lin noted that insiders had been purchasing shares and that drilling was underway, with results expected. He added, "I agree with insiders and view this unknown company as a good opportunity here."

Expanded Exploration Program Authorized Through 2029

AMD2 authorizes the construction of the Rainbow Decline, including a new portal measuring 16 feet by 15 feet and approximately 6,000 feet of underground workings connecting to the existing Lexington Mine shaft at the 400-foot level.

The authorization also permits the construction of up to seven new drill pads and up to 53 surface core holes totaling approximately 102,000 feet. Individual drill holes may reach depths of up to 7,000 feet. In addition, the company is authorized to conduct underground drilling from within the Rainbow Decline to support mineral resource definition.

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Silver Bow Mining may also stockpile up to 10,000 tons of mineralized material for bulk metallurgical testing under AMD2. The program further authorizes excavation and stockpiling of up to 150,000 cubic yards of development rock in five surface stockpiles.

According to the company, the approved activities may disturb up to approximately 11.95 acres, all located on previously disturbed private land in Walkerville and Butte, Montana. Exploration activities are scheduled to be completed by December 31, 2029, with reclamation activities to be completed no later than December 31, 2031.

Silver Bow Mining stated that information generated through AMD2 activities is expected to support continued geological modeling, metallurgical testing, engineering studies, and future project evaluation. The company also noted that the Rainbow Block project remains an exploration-stage project and that it has not established mineral reserves or demonstrated economic viability.