Grant's academic research has delved into First Nations genetic history and archaeology. His first archaeology experience was in 1979 at an Saugeen site near Grand Bend, Ontario and at the colonial French era site of Fort Rouillé in Toronto. He worked at the Howard Savage Faunal Lab at the University of Toronto, and he also studied comparative anatomy at the Smithsonian and laboratory methods in Forensic Anthropology at Mercyhurst College in Erie, Pennsylvania. He is a past board member of the Ontario Archaeology Society and the Peterborough chapter of OAS.
Grant has worked on sites from salvage archaeology near the Grand River in Haldimand County and written archaeological reports for Golder Associates. In previous decades, Grant has briefly worked at the Cactus Hill, a pre-Clovis site in eastern Virginia, while volunteering at the Virginia Museum of Natural History and taking courses at the Smithsonian Institute in Washington D.C. He has visited the Thule site at Cache Point, Northwest Territories and the Late Woodland site containing Pickering ceramics at Jacob Island on Pigeon Lake in Ontario.
Grant worked to identify the missing Cabane de Plomb, an 18th Century fur trading post near Lake Ontario and used ground-penetrating-radar in search of it. He examined the archaeology on portages in The Legacy of Vanished Trails and explored early fur trading cabins in an article entitled "The Archaeology of Three Fur Trading Cabins in Southern Ontario".