The most important method of mining tin in Nigeria is the? by Sunday | Jun 15 | Geography WAEC | 0 comments A. shaft B. open cast C. drilling D. adit Correct Answer: Option B – open cast Users Also Read These:The Tin Producers’ Association was formed in 1929 to?Which of the following statements is not true of tin? itThe most important factor that delayed the…Tin-mining activities in Nigeria are the main causes…Lead and tin are the components of?