Jeju uprising to Jeju from Busan and deploying police companies, each 1,700 strong, from the southern provinces of the mainland. The guerrillas retreated to their bases in the forests and caves around Hallasan, an extinct volcano and the highest mountain in South Korea. On April 29, the Korean, non-military, governor of Jeju province abandoned his post, defected, and joined the guerrillas. This caused many police officers, disillusioned by the atrocities they were ordered to commit against their own, to do the same. In response, U.S. military provincial governor William F. Dean ordered a purge of SKLP sympathizers from the ranks of the
Sincholagua Volcano international subsidiary Sipetrol. Accompanying Estensoro was the controversial economist , who worked as viceminister of economy and finances during the government of Isabel Perón in 1975, and is considered the architect of the radical adjustment program known as the "Rodrigazo", which contributed to erode the political and social stability of Argentina in the lead-up to the 1976 coup d'etat that installed the military dictatorship known as the National Reorganization Process (to which Zinn also contributed). Sincholagua Volcano Sincholagua is an inactive volcano located in Ecuador northeast of Cotopaxi Volcano and southeast of Quito. It is the 12th highest peak in