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the typical cost of a manganese processing plant in south africa

Jun 21, 2020 2. Micronutrient Deficiencies in South Africa The biofortification of staple foods with vitamin A, iron and Zn is widely recognised in African countries, including South Africa, to alleviate hidden hunger [20]. South Africa was the first country in Africa to adopt the biofortification of staple food crops [21]. Moreover, it is argued that the

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