Jack Henris

President & COO | Dakota Gold Corp | Gold Mine Developer

"Leading development of the Richmond Hill heap leach gold project in South Dakota's historic Homestake district"

Mining Executive

Biography

Jack Henris serves as President and Chief Operating Officer of Dakota Gold Corp (NYSE American: DC), a South Dakota-focused gold exploration and development company advancing the Richmond Hill project — one of the largest undeveloped heap leach gold resources in the United States. In this role, Henris oversees drilling campaigns, metallurgical test programs, and the engineering work streams critical to moving Richmond Hill toward a Feasibility Study and production decision.

Henris has been central to Dakota Gold's systematic de-risking of Richmond Hill. Under his operational leadership, the company has executed substantial expansion and metallurgical drilling campaigns throughout 2025, consistently intersecting high-grade gold mineralization that validates the project's scale and continuity. He has publicly noted that his experience in developing mining operations informs his confidence in the project's path, with Dakota Gold targeting production as soon as 2029 based on current work and project understanding.

Prior to his role at Dakota Gold, Henris built a career in mine development and operations, bringing hands-on experience in advancing resource projects through the stages from discovery to feasibility and toward production. His commentary in press releases and investor presentations reflects a technically grounded, milestone-driven approach — focusing on metallurgical recovery, resource model updates, and feasibility-level engineering rather than promotional rhetoric.

For mining stock investors, Henris is a key figure to watch in the U.S. gold development space. Richmond Hill's heap leach profile, located in the historic Homestake mining district of South Dakota, positions Dakota Gold as a potential mid-tier U.S. gold producer. Henris's updates on drill results, metallurgical test work, and feasibility timelines provide direct insight into the project's economics and the company's ability to deliver on its development schedule.

Videos (1)

Dakota Gold – Richmond Hill 2026 Drill Program Completed, Upcoming Resource Estimate & PFS In Q4

guest Jul 15, 2026

Top takeaway Henris argues the project's roughly $384M capital cost is structural rather than optimistic: power, water and road access already exist, the strip ratio is under 1:1, the six pits are only about 200 ft deep at worst, and the three-stage crush to half inch mirrors the neighbouring Wharf mine, making the operation simple to execute from both a mining and processing standpoint.
He says the northeast expansion intercepts run far above the 0.556 g/t average grade of the resource, including the nearly 300 gram-metre hit, and he sees real value in trade-off studies that would mine those pockets in the first years instead of processing the average grade every year as the earlier study assumed.
He identifies two levers he believes can move the economics: pulling grade forward and replacing the 30,000 t/d jaw crusher with a gyratory capable of up to 60,000 t/d, which would change the production profile materially.
He is looking for ways to compress the roughly 17-year mine schedule, and argues a dedicated heap-leach pad, rather than cycling ore on and off pads as some peers do, lets material leach to ultimate recovery, with Merrill-Crow processing as an option for recovering the project's silver more effectively.
He calls the Maitland targets a significant secondary deposit that could extend the project's life, noting the drilling program started after geotechnical work at Richmond Hill finished.

Richmond Hill's 2026 drilling is finished, with an updated resource, PFS and possible reserve conversion all due in Q4. A $107 million February raise funds construction to shovel-ready, and already secures the scarce power substation build slot. AISC (All-In Sustaining Cost — what it really costs to produce an ounce) sits at $1,047, with initial capital of $384 million. Management's value levers are pulling high grade forward, doubling crusher throughput, and holding the mine plan inside private land. Production is targeted for 2029, with feasibility in the first half of 2027 and a maiden Maitland resource due around Q1 2027.

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Key Quotes

"The drill results announced today continue to validate the scale and quality of Richmond Hill, which hosts one of the largest undeveloped heap leach gold resources in the United States."

— Dakota Gold expansion drilling press release

"Based on my experience of developing [mining operations], we now expect to advance through Feasibility and into production as soon as 2029."

— Richmond Hill Initial Assessment announcement

"As the metallurgical drilling for the 2025 campaign is now complete, we are pleased to have formally engaged Forte Dynamics for the test work program. This program represents a critical step in advancing Richmond Hill toward feasibility."

— Dakota Gold metallurgical test program update

Key Works

Richmond Hill Initial Assessment with Cash Flow (2025)

Initial economic assessment demonstrating robust cash flow potential for the Richmond Hill heap leach gold project, targeting production as soon as 2029.

Richmond Hill 2025 Drill Campaign and Metallurgical Test Program (2025)

Ongoing expansion and metallurgical drilling campaign at Richmond Hill, engaging Forte Dynamics for test work to advance the project toward feasibility.

Richmond Hill High-Grade Expansion Drilling Results (2025)

Expansion drilling intersecting high-grade gold mineralization, with results incorporated into the updated resource model and ongoing Feasibility Study.

Specializations

GoldHeap Leach OperationsMine DevelopmentFeasibility StudiesMetallurgical TestingJunior Miners

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