The Columbia Gorge Prescribed Fire Training Exchange has decided to postpone a burn planned for Thursday in the Gifford Pinchot National Forest.  A statement from the Exchange said they plan to complete this burn next week, adding the postponement participants a much-needed break, and ensure that there will be adequate staffing for both burning as well as for monitoring and patrol.  Exchange participants wrapped up a big week of prescribed fire in the Gorge and Mt. Adams area Wednesday, having burned five of the last eight days for a total of over 120 acres on mostly private lands.   The Wednesday burn, which took place at Ekone Ranch northeast of Goldendale, was deemed a success and an opportunity to begin the process of bringing fire back to the oak and pine forests on the Ekone property.  Patrol and mop-up will continue through Thursday afternoon.