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 for Countering International and Domestic Terrorism in State Security Service, after this he became Head of Counterintelligence Department in Directorate for Security and Counterintelligence and than Assistant Director for Operations in the Directorate for Security and Counterintelligence. After several years of work and promotions in State Security Service and in Directorate for Security and Counterintelligence, since 3 February 2003 Avramovski become the Director of the Directorate for security and Counterintelligence. From 2 June 2004 till 17 December 2004 he was appointed as Minister of Internal Affairs of Macedonia. He speaks French and English. Siljan Avramovski Siljan Avramovski (born 10 April