By 2050, the bulk of the world's population growth will take place in Africa: of the additional 2.4 billion people projected between 2015 and 2050, 1.3 billion will be added in Africa, 0.9 billion in Asia and only 0.2 billion in the rest of the world.
Even in the legal markets, coltan mining is environmentally dangerous. Developing nations often go through with mining operations because they need the capital these operations bring without thinking of the environmental impacts. Given that mining is an expensive venture to undertake, the returns are relatively low.oltan is mined using techniques developed for gold mining in the 1800s. The work is hard and dangerous, with workers panning for gold in large craters in stream beds, with the average worker producing less than one kilogram of coltan a day.
Some positive impacts of mining are that it brings employment to  the area and community development projects. Negative impacts  include changing the social dynamics of the â¦ community, impacting  health and livelihoods, and preventing access to clean land and  water. 11 people found this useful.f the mining sites are near bodies of water chemicals can also poison the water and the fish, it can also destroy â¦ beautiful coral reefs. Fertile land can also be affected, land can become very hard and dry because of the chemicals as well. Boiling toxic waste can cause burns on people living near the mining sites.