Yaterra Ventures Corp. (OTCPK:YTRV) acquired PureSpectrum Oil and Gas, Inc. from Purespectrum, Inc. (OTCPK:PSRU) on May 21, 2012. Under the terms of the deal, Yaterra Ventures issued 2.5 million shares to Purespectrum and assumed $0.65 million debt of Purespectrum. Yaterra Ventures Corp. (OTCPK:YTRV) completed the acquisition of PureSpectrum Oil and Gas, Inc. from Purespectrum, Inc. (OTCPK:PSRU) on May 21, 2012.