How did mineral discoveries after 1970 change Papua New Guinea’s economy?

Following major mineral discoveries after 1970, Papua New Guinea’s economy shifted from a dependency on tropical crops to one primarily driven by minerals. Large-scale extraction of gold and copper, alongside later developments in crude oil and natural gas, became central to the nation's exports and gross domestic product.1

However, this economic transformation brought significant challenges:

• Social and Environmental Conflict: Resource exploitation frequently led to disputes between local landowners and the national government regarding revenue distribution. Furthermore, severe environmental damage caused by mine tailings became a persistent issue.1
• Political Instability: Dissatisfaction over these social and environmental impacts contributed to a secessionist uprising on Bougainville in 1988, forcing the closure of the major Panguna mine and triggering years of conflict.12
• Economic Volatility: While mining provided substantial income, the economy remained vulnerable to internal crises, such as the 1989 secessionist conflict, which contributed to significant currency devaluation during the 1990s.3

Despite these upheavals, the mining sector remained a cornerstone of the economy, accounting for approximately one-fourth of the GDP in the early 21st century.1