Siljan Ring proved inconclusive. Drilling for natural gas was resumed in the late 2000s and continues as of mid-2012. The scientific premise for prospecting of this sort is based on the work of physicist Vladimir Kutcherov, who is cooperating with Igrene, the company financing the drilling operations. Siljan Ring The Siljan Ring () is a prehistoric impact crater in Dalarna, central Sweden. It is one of the 15 largest known impact craters on Earth and the largest in Europe, with a diameter of about . The impact that created the Siljan Ring occurred when a meteorite collided with the Earth's surface during
Siljan Avramovski Siljan Avramovski Siljan Avramovski (born 10 April 1960, in Skopje) is Macedonian police official and former Minister of Internal Affairs in Macedonian Government that was in power since 2002. Siljan Avramovski was born in Skopje on 10 April 1960. He graduated at Security Faculty in 1983. After graduation, he was employed in the Ministry of Internal Affairs where he was gradually promoted working on several positions. At the beginning he worked as Inspector in Karposh. Later he became Chief inspector in the Department for Countering International and Domestic terrorism in State Security Service. Avramovski was Assistant Head in the Department