Siege of Khartoum support of the Mahdi, and cut the Egyptian traffic on the Nile and the telegraph to Cairo. Communications were not entirely cut, as runners could still get through, but the siege had begun and Khartoum could only rely on its own food stores, which could last five or six months. On 16 March an abortive sortie from Khartoum was launched, which led to the death of 200 Egyptian troops as the combined forces besieging Khartoum grew to over 30,000 men. Through the months of April, May, June, and July, Gordon and the garrison dealt with being cut off as food
Khartoum in the North. Among the city's industries are printing, glass manufacturing, food processing, and textiles. Petroleum products are now produced in the far north of Khartoum state, providing fuel and jobs for the city. One of Sudan's largest refineries is located in northern Khartoum. The Souq Al Arabi is Khartoum's largest open air market. The "souq" is spread over several blocks in the center of Khartoum proper just south of the Great Mosque (Mesjid al-Kabir) and the minibus station. It is divided into separate sections, including one focused entirely on gold. Al Qasr Street and Al Jamhoriyah Street are considered