The Nigerian Minerals and Mining Act (NMMA) 2007 has vested the control, regulation and ownership of all mineral resources in all states on the federal government.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/mining-act-vests-control-mineral-resources-states-nigerian-govt-%E2%80%93-document
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/premium-times-nigeria
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/minerals
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nigeria
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa