evidence: In the north of Western Upper Nile, the government used displacement to make the area "safe" for foreign and northern-based exploitation of oil. The Heglig oil location (in Block 2) was not densely populated, but Dinka lived dispersed in the whole Heglig area and moved their cattle tocattle camps in that same region, according to contemporary accounts, the memories of former residents, and older maps.140 [...] When Chevron dismantled some of its rigs in Unity field in 1988, shipping them to Heglig and then on to El Muglad further north, the SPLM/A considered that they had pushed Chevron out of the south: "The SPLA established a firm liberated area and we visited often, searching for the [government] army. The oilfield work was stopped. We stopped them," asserted one SPLA combatant.187 Another said, "We fought the enemy in Heglig . . . The objective there: the enemy came and took the petrol. We chased them away. The purpose was protection."188 [...] 118 Alier, Southern Sudan, p. 240. According a former governor of Unity State, "Heglig point" was twenty-four kilometers inside the state. Taban Deng Gai, former governor of Unity State, Human Rights Watch interview, Khartoum, July 26, 1999.