In 2010 – 2011, DutchInspect BV worked in Nigeria in various states (Kogi, Plateau State / Bauchi and Zamfara) to find and assess Tantalite, Cassiterite and Columbite deposits. To be able to accurately assess the quality in the field, a complete and portable field testing unit was configured and implemented by DutchInspect BV consisting of a sample splitter, a sample grinder and a portable XRF device (Spectro Ametek xSort). This analysis equipment which was specially calibrated for qualities available in Nigeria.