It shouldn't come as much of a surprise that most of the world's wettest mines are located in a country that's highly vulnerable to typhoons. The Philippines is home to seven of the mines on this list, where close to 5,000 millimetres of rain can fall in a single year.
But the world's wettest mine is Papua New Guinea's Ok Tedi. This open-pit copper, gold, and silver mine gets an average of 6,636 millimetre per year. To put that into perspective, Vancouver - one of Canada's rainiest cities - sees about 1,199 millimetres. London, England gets only 594 millimetres.
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#1 Ok TediAverage annual precipitation: 6,636 mmLocation: Papua New GuineaOwner: Ok Tedi MiningType: Open-Pit copper, gold and silver mine
#2 AdlayAverage annual precipitation: 4,885 mmLocation: PhilippinesOwner: CTP Construction and MiningType: Open-pit iron ore and nickel mine
#3 CarrascalAverage annual precipitation: 4,740 mmLocation: PhilippinesOwner: Carrascal Nickel Corp.Type: Open-pit nickel mine
#4 TandawaAverage annual precipitation: 4,690 mmLocation: PhilippinesOwner: Shenzhou Mining Group CorporationType: Open-pit nickel mine
#5 DahicanAverage annual precipitation: 4,690 mmLocation: PhilippinesOwner: CTP Construction and Mining Corp.Type: Open-pit nickel mine
#6 CantilanAverage annual precipitation: 4,680 mmLocation: PhilippinesOwner: Marcventures Holdings Inc.Type: Open-pit nickel mine
#7 KalontaAverage annual precipitation: 4,558 mmLocation: MyanmarOwner: China Ming HuaType: Open-pit tin and tungsten mine
#8 UrbiztondoAverage annual precipitation: 4,465 mmLocation: PhilippinesOwner: FS Borja Mining & TradingType: Open-pit nickel mine
#9 Taganito MineAverage annual precipitation: 4,414 mmLocation: PhilippinesOwner: Sumitomo Metal MiningType: Open-pit iron ore and nickel mine
#10 El Limon / El MangoAverage annual precipitation: 4,297 mmLocation: ColombiaOwner: Four Points Mining SASType: Underground gold and silver mine