Parties of surveyors and assistants travelled for several months, without any contact with civilization, to stake their assigned territory.
Surveying was hard work: journeys were long, men lived in tents or makeshift shelters in all weather, and any injury might prove fatal without medical assistance. Fleming’s reports included accounts of death by burning, neuralgia, and drowning in a frozen lake when the ice broke.
Fleming also had great difficulty in providing supplies for his men in remote and inaccessible regions.