Calvalley Petroleum Provides Operations Update; Shrs Fell 4% Thursday By Scalper1 | January 4, 2013 0 Comment Calvalley Petroleum Inc. Read More: Calvalley Petroleum Provides Operations Update; Shrs Fell 4% Thursday Related posts: BNK Petroleum Provides U.S. and International Shale Update; Fell 1.5% Tuesday UPDATE: Manas Petroleum Corp. Update on Tajikistan; Shrs Jump 25% Today Tethys Petroleum Provides Kazakhstan and Tajikistan Operations Update Almonty Industries Provides Spain Update; Shrs Fell 3% Wednesday