First, the global mineral exploration investment is the first to pick up after 2012. The latest data released by SPG shows that the global metal mineral exploration investment in 2017 was 7.95 billion US dollars, up 14% year-on-year (Figure 1). This data confirms the judgment that the mineral exploration market has turned from a downturn to a recovery. From 1991 to 2017, the global metal mineral exploration investment experienced two major cyclical fluctuations. The first cyclical fluctuations were roughly from 1991 to 2002. After 1991, global metal mineral exploration investment entered a growth stage, reaching a peak of US$4.568 billion in 1997, with an average annual growth rate of 13.3%; affected by the 1997 Asian financial crisis, minerals The survey investment has experienced a continuous decline for 5 years, with an average annual decline of 16.6%, and fell to 2.05 billion US dollars in 2002, a drop of 60.5% compared with the 1997 peak. The second cyclical fluctuation is roughly from 2003 to the present. After 2002, the investment in mineral exploration has grown rapidly. By 2012, it reached the peak of US$20.526 billion, with an average annual growth rate of 30.4%. During the period, it was affected by the international financial crisis triggered by the US subprime mortgage crisis. In 2009, mineral exploration investment dropped sharply by 36.1%, but then quickly adjusted back, maintaining the overall trend of sustained growth; after 2012, global mineral exploration investment began to fall sharply, and the average annual decline in 2016 was 23.8%. In 2017, the global mineral exploration investment has been upgraded from a downward trend, which means that the new round of rising cycle of mineral exploration is still at a low level and still needs further observation. (figure 1)
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