Rice Prices in Sierra Leone - Statistics Sierra LeoneConsumer Price Index. FAO. Food and Agriculture Organization. GTAP. Global Trade Analysis Project. MOFED. Ministry of Finance and Economic Development. PPP. Purchasing Power Parity. PSD. Production, Supply, and Distribution. SLIHS. Sierra Leone Integrated Survey. SSL. Statistics Sierra Leone. USD.coltan price in sierra leone,coltan price in sierra leone,Precious Minerals Trading – National Minerals AgencyIt is also within their mandate to monitor international price for precious minerals, improve on valuation techniques in order to enhance export tax. Staff of PMT . This document could be collected at the Precious Minerals Trading Directorate at the Bank of Sierra Leone building, 2nd floor, Siaka Stevens Street, Freetown. 4.