According to the U.S. Department of Labor, 31% of Nigerian children (around 14,000,000 children) aged 5 to 14 years old are working children who engage in forced labor in various sectors. According to the Department's "List of Goods Produced by Child Labor or Forced Labor", instances of child labor have been observed in the agricultural sector where children participate in the production of cocoa, cassava, and sand, and in the mining industry where they mine, quarry, and crush gravel and granite.