1. Factory Emissions: One of South Africa's oldest steel producers, Acelormittal (formerly known as Eskor), is located just outside Sharpeville. These factory chimneys protrude high into the air, so while they emit the most air pollution (through fossil fuel emissions) and, in turn, lead, they contribute no more to health problems than the people are developing due to air pollution, because they are above our respiratory level, but it remains a contributor because as the gases come out of the chimneys the wind carries them away from the factories, the air condenses and the pollution combines with rain to form acid rain, this cycle is demonstrated by figure 4. Acelormittal emits mostly steam and not smoke. Steam is formed when water is heated and passes into the gaseous stage, while smoke is a by-product of combustion and is made up of particles and greenhouse gases such as carbon dioxide and contains small particles such as lead (A.Helmenstine, 2014 ). Another major contributor is the Sasolburg factories. Sasolburg is only a 22 minute drive from Sharpeville, in this area people experience westerly winds, so when the winds come from the Sasolburg side, which is west of Sharpeville (Focus geography gr 12, page 73), in Sharpeville it blows all the pollution in Sharpeville. Pollution is heavy in the air, blocking the sun and being breathed in by all the people who live in Sharpeville. Gas cycling also occurs, whereby smoke emitted from Sasols factories carries many small particles, such as lead, into the area, which settle in rivers and soil.2. Coal Stoves: Coal stoves are used to cook food and to bring warmth in the winter. The amenities aren't very good in Sharpeville, so there's a lot of...half of paper...partheid and I think they're right. The massacre was reported around the world and mobilized the world to start taking action on the situation in South Africa. There are also other centripetal forces keeping people in Sharpeville. One of these is the employment opportunities, Sharpeville was originally just a hostel for miners to stay in whilst working in the mines, but of course with each miner came a family and so the town grew. Another centripetal force is the historical value and all the family members still staying in the area. In 2004 many people also had their land returned and were compensated for the loss of their property and land. Of course there are also centrifugal forces at play here and that would obviously be the air pollution, the health risks associated with living there and the lack of amenities in the area.