RT null T1 Colombia, Monitoring of Alluvial Gold Mining and the Use of its Data A2 Vargas, Nohora Ordoñez K1 gold mine K1 Colombia YR 2023 FD 2023-03 LK https://wedocs.unep.org/handle/20.500.11822/42397 UL https://wedocs.unep.org/handle/20.500.11822/42397 DS UN Environment Document Repository RD Sep 16, 2026