 In 1856, Grinnell was instrumental in having the recently salvaged HMS "Resolute" restored at the expense of the United States government, and returned to Great Britain as a good-will gesture.This was partly in the hope that the vessel would be used for a further search for the Franklin expedition.On later occasions, Grinnell manifested his unabated interest in polar exploration by contributing to the voyage of Isaac Israel Hayes in 1860, and the three expeditions of Charles Francis Hall between 1860 and 1870.