Encina said Codelco is working to convert one of its biggest mines, Chuquicamata, from open pit to underground.
FORBES: Continuous Mining To Help Chile Extend Mine Life, Save Money
Besides its open pit mine located in Northern Quebec, there is a growing lithium battery industry growing in Montreal.
FORBES: Canada Lithium on Target For 2013 Production; To Be First Canadian Lithium Producer
Along with strong financial backing, the Quebec Lithium open pit mine is on schedule in terms of commissioning and construction.
FORBES: Canada Lithium on Target For 2013 Production; To Be First Canadian Lithium Producer
Yes, open pit bitumen mining blights the landscape, the process releases too much carbon dioxide, and tailing ponds occasionally kill ducks.
Opponents say the new mine, which will consist of an open pit, tunnels beneath, and processing plant, will destroy the forest and contaminate groundwater.
While we focused on waste removal, our ore release from the open pit suffered and we dipped into our lower-grade stockpile to feed the mill.
FORBES: Pan American 3Q Silver Output Lifted By Newly Acquired Dolores Mine; Adjusted Earnings Fall
They are built instead below the existing open pit, he said.
FORBES: Continuous Mining To Help Chile Extend Mine Life, Save Money
Sales decreased from 2.32 million ounces in 2007 to 1.31 million ounces in 2008 due to mining in the lower grade section of the Grasberg open pit.
It was unclear why the children were in the deep open pit at the home in a rural area of Lincoln County, about 20 miles northwest of Charlotte.
Still, the increase at Manantial Espejo was less than anticipated due to delays in commissioning an additional mining fleet that was purchased to accelerate open pit production, Pan American Silver said.
FORBES: Pan American Silver Anticipates Navidad Study By Year-End; Encouraged By Argentine Politics
Open pit mines cannot be converted to underground mines.
FORBES: Continuous Mining To Help Chile Extend Mine Life, Save Money
Newmont attributed the lower production to the processing of lower grade ore from stockpiles as it prepared for a new phase of mining at the vast open pit in the mountains of Sumbawa.
The company rejects these claims, saying it will refill and replant the open pit once the ore has been extracted, and that all necessary care is being taken not to pollute the environment.
Newmont has attributed the lower production to the processing of lower grade ore from stockpiles as it prepares for a new phase of mining at the vast open pit in the mountains of Sumbawa.
FORBES: Newmont's Revised Production Forecast In Indonesia May Cause Labor Troubles
Serra Pelada, at its peak in the 1980s, saw as many as 80, 000 artisanal miners (called garimpeiros) mine roughly 2 million ounces of gold as well as platinum and palladium from a hand-dug open pit.
FORBES: Serra Pelada Set To Resume Gold, Platinum, Palladium Production Again In 2013
The current phase of production at the Ekati Diamond Mine includes ore sourced primarily from the lower grade, but high carat value, Fox open pit supplemented by underground production from the lower portion of the Koala kimberlite pipe and from the Koala North pipe.
FORBES: Harry Winston to Purchase Ekati Diamond Mine For $500 Million
Highlights included the return of the open pit (unlike the Ozzfest which only allowed a 1000 or so into a cordoned off area), great sets from Iron Maiden, Audioslave, Mudvayne, Disturbed (once the mic was switched on), covered areas where people could escape the sun, watch films and play on games consoles, and two stages offering a variety of different styles.
Operations at the open coal pit continued, and the company got slapped with a tax fine.
The accident has had no effect on the open mining pit at Grasberg, he adds.
At Surmont, instead of open-pit mining, the bitumen is melted out of the ground by injecting steam.
Buy it and you make some open-pit mine in Arizona a little deeper.
There are also fears that the mine being open-pit will contaminate water supplies.
FORBES: Newmont's Conga Project In Peru Faces Uncertain Fate
De Beers is active in every category of industrial diamond mining: open-pit, underground, large-scale alluvial, coastal and deep sea.
FORBES: Anglo American Receives Final Regulatory Approval for De Beers Acquisition
The open-pit mine, which was once owned by Anaconda, has sat abandoned since 1978 after Anaconda sold the property.
FORBES: INTERVIEW: Full Speed Ahead On Yerington Copper Mine -- Quaterra CEO
The geology in Texas allows for a mining procedure called "in situ" recovery, cheaper than traditional seam or open-pit mining.
The big prize here is a 20% stake in the Fort Hills oil sands project, an open-pit mining operation targeting 3.4 billion barrels of bitumen.
Vast open-pit mines that spew clouds of dust into the air scar a landscape that locals say was largely pristine only a few years ago.
ECONOMIST: Inner Mongolia: Little Hu and the mining of the grasslands | The
In December announced that production from its biggest open-pit mines in South Africa and Botswana, which had been running at full capacity, would be reduced until diamond demand recovers.
Bigger is better at open-pit mines at the top of the Andes or on the vast oil sands of western Canada, since miners spend up to 30% of their budget hauling.
Timmins owns 100% of the open-pit heap leap operation.
FORBES: Timmins Sees Its San Francisco Mine Having 10 Year Mine Life -- CEO
应用推荐