- Mirny (Мирный) is a city located in the Sakha Republic, Russia. It is the second-largest city in the republic and is situated in the northeastern part of Siberia. Mirny was founded in 1955 as a settlement for the workers of the Mir diamond mine, one of the largest open-pit diamond mines in the world. The city's name "Mirny" translates to "peaceful" or "calm" in Russian. Today, Mirny serves as a major center for diamond mining and processing, with several diamond mining companies operating in the area. The city has a population of around 36,000 people and offers various amenities such as schools, hospitals, and recreational facilities. Mirny is known for its harsh climate, with extremely cold winters and relatively short summers. Despite the challenging weather conditions, the city thrives due to the prosperous diamond industry.