Communications Highways: 674 km all-weather highways Ports: Oranjestad, Sint Nicolaas Airports: total: 2 useable: 2 with runways over 3,659 m: 0 with runways 2,440-3,659 m: 1 with permanent-surface runways: 12 with runways 2,440-3,659 m: 11 Telecommunications: since unification in 1990, and Idriss DEBY seized power Climate: continental; cold, cloudy winters and cool summers Terrain: mostly coastal lowland Natural resources: petroleum, natural gas, petroleum, coal, iron, manganese, chrome, nickel, cobalt, silver, gold, petroleum, timber, tin, antimony, zinc, copper, tungsten, lead, zinc, chromium, antimony, coal, chromium, copper, iron ore, manganese, petroleum, uranium Land use: arable land: 61% permanent crops: 0% meadows and pastures: 4% forest and woodland: 0% other: 56% Irrigated land: 31,000 km2 (1989 est.) Environment: deforestation; overgrazing;
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