Raise climbing, widely known as the Alimak mining method after the company that introduced it, is a variation on longhole stoping developed. Hard Rock Selective Mining. Methods. • Room and Pillar. • Cut and Fill. • Shrinkage. • Alimak Mining. • Raise bore and Box hole Mining. Maxwell Adombila Akalaare 22 September Golden Star Resources (GSR) has sealed a three-year deal with Canadian mining contractor.
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The method works best if the ore boundaries can be interpolated between adjacent raises. Once installed, the system can be operated by one person and can develop stopes that are 12 to 15 metres wide and a minimum of 1.
Gallery Click on the photos below for a larger view: This includes the telescopic platform from which the miner alimka the system.
Greg Dipple of UBC has discovered that certain mine tailings can be used for carbon sequestration, and the implications could be enormous. Drill holes extend to just less than half way to the next raise and are oriented slightly down from horizontal.
Raises must be driven big enough that a 2.
Manroc’s lateral development includes full excavation of access ramps, declines, drifts, and crosscuts. T hree-quarters of the way intoit became clear that this was a very good year for Claude Resources. Overall costs are lower, but the method also costs more to run, which could deter some but does not faze its proponents. The down dip helps the toes break to the stope wall.
In regular open stoping, overcuts and undercuts provide access to the ore along strike. We are your preferred underground mining professionals.
The climber nests are always in the hangingwall. The installed support is also enhanced by the broken ore, which acts as dry fill while in place. The President and Chief Executive Officer of Golden Star, Sam Coetzer, had earlier said in a statement that the appointment of a mining contract was the next important step in efforts aimed at reviving the mine.
These drifts are also driven from the shaft or existing development but, unless there is another lift, they often need only be large enough for the movement of supplies.
Stopes can be as little as 3 feet thick, or even less in ideal circumstances.
There are several projects in Canada that could benefit from the technology — perhaps half a dozen are assessing their properties and reviewing their mine mihing, Beauvais says.
Manroc has worked with major mining firms around the world, and has built a solid reputation. He said that Manroc was selected after a competitive bidding process that involved three companies.
Ground Control Experience has shown that the stopes mined with a raise climber tend to be more stable than regular longhole open stopes. Other improvements have focused on the climber end. After each round of blasting, the broken ore falls down the raise and is collected by a scooptram.
Golden Star, Manroc Dev’t agree on Alimak mining method
After the raise is driven it often must be rehabilitated, subject to ground conditions, for the safety of production crews. Backfill Fill fence and piping if required. This step is often required where rock fill is used. Better Ground Control Cables can be installed right up the middle of the hangingwall, where they will do the most good.
Alimak Production Mining, Manroc Developments Inc.
Teck installs first production-scale machine learning system Machine learning predicts when trucks will need maintenance at Fording River coal mine. A narrow vein ore body has less ore to soak up waste development costs, making the raise mining method an obvious choice.
Though Manroc qlimak has collected a double handful of Alimak success stories, uptake of the technique has been limited since it was popularized in the s. The Seabee mine had to adapt to this new cycle. So you put in a lot of work, but you get a lot of ore out at the end.
We have a solid reputation when it comes to employing the safest and most productive techniques available. Cable bolting provides better ground support from its position in the central hangingwall of the stope, and the broken ore adds support by putting outward pressure on raise walls.
Dilution is hard to control and it can be awkward and difficult to secure the roof with bolts or screens.
A Leader in Alimak Mining
This is less important in sulphides, where the driller can tell if the bit is in ore by the colour of the cuttings. Managing risks Though Manroc alone has collected a double handful of Alimak success stories, uptake of the technique has been limited since it was popularized in the s.
Prospects good for long term copper price, despite current volatility Lack of major copper discoveries mean supply will likely fall short of demand in next decade. Eliminating the intervening levels cuts out a good chunk of lateral development time and spending.
Golden Star, Manroc Dev’t agree on Alimak mining method – SAMSSA
The climber holds two to three people and the drilling and blasting equipment they need. An independent report by CanmetMines, part of Natural Resources Canada, outlining the test results will be published sometime in August. Experience has shown that the stopes mined with a raise climber tend to be more stable than regular longhole open stopes.
Fill fence and piping if required. The mining method jethod Beaufor is currently long-hole and room and pillar, but Beauvais is hopeful that Richmont could adopt SAMS once the technology is commercial. Experience has shown that raises metnod 75 to metres length are the most methov.
All of the equipment is electric and modular. These drifts are driven from the shaft or established mining areas to the new ore zone. Committed to safety and excellence, Manroc is at the forefront of Alimak mining, generating safer and more productive methods.