Responses to the West African Ebola virus epidemic being curated by the Data Science Group of the Thomas J. Watson Research Center. International Mutual Aid is a US-based 501 (c) (3) nonprofit, conducting Ebola treatment, surveillance, contact tracing, and case investigation in Kono District, Sierra Leone, during the epidemic. On 14 August, the Nigerian government said Aliko Dangote had donated $1 million to halt the spread of the Ebola virus outbreak. Facebook founder Mark Zuckerberg and his wife Priscilla Chan have announced a donation of $25 million to the CDC Foundation to fight the Ebola crisis. On 29 October a South African businessman, Patrice Motsepe, donated $1 million
Dangote Cement revenues of US$2.4 billion. As of 2014, Dangote Cement had a market capitalization of $20 billion. In 2012, "Forbes Africa" named Dangote Cement as one of the top five listed companies in West Africa. Dangote Cement is Nigeria's largest cement producer with three plants in Nigeria and plans to expand in 13 other African countries. The company is a fully integrated quarry-to-depot producer with production capacity of 19.25mmtpa in Nigeria at the end of 2012. The company plans to build a further 19mmtpa of production, grinding and import capacity across Africa, expected to be operational by the end of 2015.