A week later Ambassador Edward Korry reported telling outgoing Chilean president Eduardo Frei Montalva, through his Defense Minister, that "not a nut or bolt would be allowed to reach Chile under Allende." By late 1972, the Chilean Ministry of the Economy estimated that almost one-third of the diesel trucks at Chuquicamata Copper Mine, 30 percent of the privately owned city buses, 21 percent of all taxis, and 33 percent of state-owned buses in Chile could not operate because of the lack of spare parts or tires. In overall terms, the value of United States machinery and transport equipment exported to Chile by U.S. firms declined from $153 million in 1970 to $110 million in 1971.[11]:33