Lac de Gras Lac de Gras Lac de Gras is a lake approximately north east of Yellowknife, in the Northwest Territories of Canada. Lac de Gras was the centre of the diamond rush of the 1990s. There are two working, and one closed, diamond mines in the area, Diavik Diamond Mine, Ekati Diamond Mine, and the care and maintenance Snap Lake Diamond Mine. It was called Ekati by aboriginal peoples. The lake is ultraoligotrophic but supports a slow-growing but stable population of some eight species of cold-water fishes, including round whitefish, cisco, and lake trout. Lake trout dominate the lake, both numerically and
Melnikov Permafrost Institute opened in 2012. Melnikov Permafrost Institute Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Science () is a research institute based in Yakutsk, Russia. It was founded in 1960. Method for Determining Air Content in Frozen Soil, Method and Apparatus for Determining Volume and Density of Soil Particles, Apparatus for Heat Exchange of Liquids and Gases, Method for Determining Frost Heave during Active Layer Freezeback, Pile for Permafrost, Device for Cooling Permafrost Soils, Method for Production of a Pile Foundation for Permafrost, Device for Stabilization of Indoor Temperature and other. Cryo-storage of seeds of rare and