ABUJA — Nigeria and the United States have signed a framework agreement aimed at deepening American investment in Nigeria’s mining sector and developing the country’s mineral resources, estimated by the Federal Government at about $700 billion. The agreement was signed and exchanged on Wednesday at the Nigeria Mission House in New York by the Minister of Solid Minerals Development, Dele Alake, and US Deputy Secretary of State, Christopher Landau, on the sidelines of the 81st United Nations General Assembly. The framework is designed to use the Nigeria-US government relationship as a foundation for business-to-business transactions and greater investment across the country’s mineral value chain. It covers geological data and exploration, mineral development and processing, infrastructure and technical capacity building. Speaking at the signing ceremony, Alake said the agreement marked a new phase in Nigeria’s efforts to attract investment into the mining sector and move beyo...