Britain rescinds its Trent Affair restrictions on the export of saltpeter and other war materials
During late 1861 at the height of the Trent Crisis, the British Government had placed several prohibitions by royal proclamation on the exports of munitions and munitions materials such as powder, saltpeter and other nitrates, and lead. British India was an important Union source of saltpeter. All these restrictions were lifted as of February 5, 1862, also by royal proclamation. (By John Osborne)
Frank Moore, ed., The Rebellion Record: A Diary of American Events, with Documents, Narratives, Illustrative Incidents, Poetry, Etc. (New York: G.P.Putnam, 1862), IV: 24.