| Abstract:||This project will build on previous FPInnovations research burns completed in the Northwest Territories. The Northwest Territories ‘05 and ‘07 test burns showed that thinning and surface fuel removal changed fire behaviour in favour of successful suppression. Additional fuel treatment tests will help practitioners better understand tradeoffs between the effort needed to do fuel management, and fuel treatment effectiveness related to changing fire behaviour. The specific forest fuel treatment being replicated in this work plan is the underburning of otherwise untreated forest fuels to remove the dead-and-down component. Ignition and sustained burning tests will be used to determine the likelihood of sustained surface fire.