FPInnovations studied a series of four partial harvesting trials and one combined partial harvesting–clearcut trial over three years in the Prince George (B.C.) Forest District. The partial harvesting trials harvested pine trees killed by the mountain pine beetle while protecting the non-pine secondary structure. The purpose of protecting the secondary structure is to provide a viable stand that will enhance the mid-term timber supply in 15 to 50 years. This report provides the costs, productivity, and harvesting damage results of the partial harvesting and clearcutting treatments used in the fifth and final trial. The pre-harvest stand was stocked with non-pine trees before harvesting, but was not stocked following the partial harvesting treatment. Slightly more than one-third of the net block area was clearcut for roads, trails, and landings. The trial results suggest up to 23% of the harvested non-pine overstory could potentially have been protected.