Rail transport in Argentina served by train, departing from Constitucion, Once and Retiro terminus located in the centre of Buenos Aires. Some cities currently are: Mar del Plata, Rosario (both stations, Norte and Sur, Córdoba, General Pico, Santa Rosa, Rufino and San Miguel de Tucumán. Other regional services are operated by their respectives Provinces, such as Tren a las Nubes (operated by the Government of Salta) and Servicios Ferroviarios Patagónico (also known as "Tren Patagónico") by the Río Negro Province. Buenos Aires Córdoba Entre Ríos Misiones Patagonia Rosario Salta Tierra del Fuego There are several private freight operators in Argentina, along with the state-owned
Salta Province significant role in Salta, adding 20% to the economy. Gas and petroleum from the Tartagal, Aguas Blancas, Madrejones and Campo Durán centres is transported to Buenos Aires and Rosario by pipes. There is also an oil refinery located at Campo Durán. Mining includes uranium at Iruya, La Poma and San Carlos. Agriculture and its derived industries are still an important activity in the province, adding over 10% to output. Tobacco, sugar cane and viticulture are the most important and produce most of the exports from the area. Other crops mostly for local consumption are maize, beans, citrus, bananas, and tomatoes.