Daniel Boone lived around Charleston until 1795. During his residence he was appointed a lieutenant colonel in the county militia in 1789 and was elected to the Virginia assembly the same year. The area became important as a center of salt production in 1824, when steam engines were used to operate brine pumps. After Charleston became the capital of West Virginia in 1885, following a dispute with Wheeling, the town came into its own. During World War I, an increased demand for plate and bottle glass, as well as for high explosives, made Charleston and the nearby town of Nitro boom.