Some seem to have gone to the southern border with Brazil, to deal with illegal mining.
Eventually, some 150 illegal mining and quarrying companies in the area were shut down.
Illegal mining is a major concern in Ghana's mining areas where operators use sophisticated equipment to process the ore.
More than 120 Chinese nationals were arrested in Ghana as part of a renewed clampdown against illegal mining in March.
S. Yeddyurappa, was forced to resign in 2011 when the state's anti-corruption watchdog accused him of corruption related to illegal mining.
Another court decision Thursday was to cancel the leases of 49 Karnataka mines facing the most serious charges of illegal mining and land degradation.
Miners in the country's Madre de Dios region have been demonstrating ahead of the enforcement of several decrees aimed at cracking down on illegal mining.
Like many Congolese here, Mr Dishuishe is convinced Europeans are abetting Rwanda's illegal mining in DR Congo, including for coltan, a mineral vital to the electronics industry.
The court halted mining of the ore in the mineral-rich state in 2011 after social activist group Samaj Parivartan Samuday alleged that rampant illegal mining had damaged the environment.
Soon there will be a meeting with the local government about turning Rebo beach into a tourism destination, essentially putting an end to the illegal mining his 80 men work at every day.
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Illegal artisanal mining is already impacting several of the sites and the attribution of new oil and mining concessions could threaten their World Heritage status.
In return, Guyana has promised to guarantee the preservation of the forest in the immediate future, preventing illegal logging and mining and thus helping to put the brakes on climate change.
The government says the mining is illegal, but in this rural Muslim region of north-western Nigeria it has been going on for generations - and it was a discovery of greater deposits that has led to the recent boom in digging for gold.
The area is currently populated by over 20 million people and is challenged by deforestation, agriculture, mining, a governmental dam building spree, illegal land speculation including the occupation of forest reserves and indigenous land and other issues.
"Botnet mining is fundamentally theft of private property, illegal and unethical, " Jeff Garzik, a bitcoin developer told the BBC, adding that bitcoin miners had battled botnets for years, seeing them as a "cost and a burden" they just had to deal with.
Two big mining firms have hardened their stance on strikers in South Africa, where illegal stoppages have spread across the country.
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This year, the Supreme Court threw out a multimillion-dollar mining lease awarded to a Canadian-Chilean joint venture, calling the agreement illegal.
Mining fatalities at major companies are relatively rare in Indonesia, though each year dozens of illegal and independent miners are killed in accidents, often landslides.
Mining accidents are not rare in Indonesia, but they usually take place in unregulated and illegal coal mines with shoddy and outdated practices, the BBC's Karishma Vaswani in Jakarta says.
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