Meet the industry leaders who shape the Future of Mining in the Americas
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Bunker Hill ball mill is loaded on a trailer.
Revolutionize Tailings Management with the TDW Pump
CONEXPO-CON/AGG, Taking Construction to the Next Level
Proper Pump Clearance = Longer Wear Life
Metso Outotec's bulk transportation solution
Bunker Hill is inching towards its restart of its Bunker Hill silver-lead-zinc mine in Idaho, having advanced its underground decline from the 5 level to the 6 level, approximately 1,100 feet.
The Toronto-based company now plans to rehabilitate pre-existing decline infrastructure that connects to the 8 level, which will save time and capital.
Revolutionize Tailings Management with the TDW Pump
CONEXPO-CON/AGG, Taking Construction to the Next Level
Proper Pump Clearance = Longer Wear Life
Metso Outotec's bulk transportation solution
Once completed, Bunker Hill will have access to mineralisation that will allow the restart of the mine.
Bunker Hill will update investors with a monthly update moving forward, chief executive Sam Ash said.
Significant progress in plant demobilisation has also taken place. Bunker Hill has dismantled Teck Resources' Pend Oreille site. The company has now transported the ball mills, regrind mill, crushers, flotation cells, lime silo, truck scales, pumps, motors, and other ancillary equipment 145 miles to the Bunker Hill site.
In the last week of July, the company needed to deploy a 265-ton crane to extract the ball mills, regrind mills, larger flotation cells, and the lime solo.
Bunker Hill will now load and transport spare parts, built-in overhead cranes, laboratory equipment, and the underground jaw crusher from the Pend Oreille site. This will be completed by the end of August.
The company is now inspecting the equipment, and is drawing up a maintenance and renovation programme for the mill equipment.
The Wardner yard has now been cleaned up, and will house future dry facilities and surface storage for the heavy equipment fleet. The fleet will include two additional underground haul trucks and an electric jumbo drill.
These equipment will be used to further advance the decline, and possibly for simultaneous mine development and mining in the pre-start period.
Bunker Hill also plans to complete a major upgrade of electrical infrastructure and is working with local electricity provider Avista to enable a transition from relying on diesel generators to using the main electricity grid. Bunker Hill is targeting the December quarter 2022 for connection.
The company has nearly completed its pilot water treatment study, to ensure the plant's Lamella clarifier removes metals from the mine discharge water and meets local environmental standards.
The pilot system was built at one-twentieth of the full-scale plant, and is now being modified using the results of the study. The pilot plan, pilot study, and full-scale system design were provided by MineWater LLC.
Bunker Hill plans to release a prefeasibility study by the end of the September quarter this year, and its development timeline remains unchanged.
Revolutionize Tailings Management with the TDW Pump
CONEXPO-CON/AGG, Taking Construction to the Next Level
Proper Pump Clearance = Longer Wear Life
Metso Outotec's bulk transportation solution
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The screening process: a vital component of the crushing circuit
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