Other local industries include an oil refinery with a capacity of a day, and a cement factory capable of producing over 1.1 million tons per year. The major intercontinental undersea telecom cables reach shore next to Mombasa, connecting the African Great Lakes to the rest of the world and supporting a fast-growing call centre business in the area. The estimated real GDP growth for Kenya in 2016 is 5.7-6.0%. This growth will be in response to the construction of a railway system from Nairobi to Mombasa which will aid in trade and transportation between Kenya's two major cities.