number of cars on the road video vehicle population how many cars on earth number of cars in the world how many cars are there in the world Electric vehicles sustainable development Auto Industry international transport forum how many cars in the world numbers of cars in the world.
A black market for coltan â a strategically important mineral used in an array of electronic devices â has emerged in the Amazon jungles that cover the border area between Colombia, Venezuela and Brazil. In Venezuela and most of Colombia coltan mining is illegal, yet small-scale miners and buyers are plentiful.
The DRC has several working coltan operations that are quite large in scale. These are usually underground operations where men, women and children may work as coltan miners for as much as 16 hours a day slowly chipping away at the surrounding rock walls in order to remove tantalum ores.The more common form of extracting the ore, however, is currently the many illegal sites across the country.en aren't the only individuals turning to coltan mining to support their families. There are also many women and children in the mines, due in large part to the need to have every family member working in order to survive the poor economic conditions of the area.