This article provides keywords and reflections for decolonial methods, drawing on insights from the Indigenous-led Land and the Refinery project, which concerns the history of Canada's Chemical Valley. This project is crucially organized as Indigenous people co-researching the Imperial Oil Refinery, not as academics studying Aamjiwnaang, and asks how Indigenous and decolonial methods might reorient the use of archives toward other futures. Together, the keywords begin to outline a particular place-based theory of change within decolonial historical practice.