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Oct 13, 2021 Opportunities in Mining. Nigeria offers other excellent investment opportunities for U.S. companies involved in the extractive industries including mining of solid minerals. Opportunities especially exist in sales of mining equipment, machinery and associated technology and services. Oct 27, 2020 An in-depth analysis on mining in Nigeria. By Guest Contributor. Oct 27, 2020. The economy in Nigeria has been growing slowly since the oil price slump of 2014. Since then, volatility of global oil prices has negatively impacted growth performance. Between 2000 and 2014, GDP grew at an average of 7% annually.