An important aspect of how Africa would deal with future challenges to bring about successful implementation of sustainable urbanization policies is the use of energy-saving technologies for cement production. Currently, the major African reserves of its limited coal reserves exist in South Africa and mostly exported to the global market (http://www.eia.gov/beta/international/analysis.cfm?iso=ZAF). This with the relatively very limited access to coal and the risk for increasing future coal prices in the world (http://oilprice.com/Energy/Coal/Why-Coal-Prices-Will-Soar-In-The-Coming-Years.html) make is necessary to invest in alternative cement production processes,  where huge energy-saving can be based on physical rather than thermal activation.