North Korea - Work Seen at Missile Site - NYTimes.com Commercial satellite imagery taken a few weeks ago suggests that North Korea is upgrading its main launch facility with the possible intention of handling both larger and more mobile missiles, a Washington-based research institute that monitors the country said Tuesday. In a report posted on its website, 38 North, the U.S.-Korea Institute at the Johns Hopkins School of Advanced International Studies said the new construction at the Sohae Satellite Launching Station in North Korea suggested it may become "the main, and perhaps sole, test facility in the future." The report was the institute's second in less than a week that utilized satellite imagery to suggest North Korea is proceeding with proliferation activities that have been banned by the United Nations Security Council, which has imposed severe sanctions on the country in response.