One 20-acre spruce-fir slash block was burned at moderate fire hazard. Weather, fuel-sampling, ignition pattern and fire effects are reported. The burn effectively reduced the slash-fuel-loading to a level where the spread of wildfire through the residual fires is unlikely and cleared the site for planting by eliminating much of the physical barrier of fine-fuel concentrations. The burn did not, however, eliminate the possibility of a slow spread of wildfire through the remaining humus. © The Canadian Institute of Forestry/Institut forestier du Canada. Abstract reproduced by permission.