Other products include peanuts, corn, sorghum, cotton, tomatoes, cattle, poultry, pigs, rice, millet, fish and green vegetables. Deposits of salt, fuller's earth and natural gas are also exploited. Imported petroleum is refined in Dakar. Telecommunications Direct dialling is available from South Africa on dial code 09221 followed by the subscribers number. The metric system is utilised General Medical facilities are limited.
Tourism is a major source of foreign exchange.
Payments for imports with the exception of down payments, are permitted only after the proper documents for customs clearance are submitted. Advance payments for imports require authorisation and importers may not acquire foreign exchange until the contractual date of the payments. The Ministry of Industry, Commerce and Handicrafts issues prior import authorisations for listed products. Quantitative restrictions and prior authorisation requirements for certain imports are now based only on the type of product, not on the country of origin or transhipment. Senegal is a contracting party to the Harmonized System Convention.