From 1883 when the mine began operation until its seam worked out in 1955, it produced forty-four-million tons of coal. The former Fanhouse (c. 1900), constructed to ventilate the mine, has become the visitor entrance to the Pocahontas Exhibition Mine. Lighted interior exhibits demonstrate how coal was cut, including the old hand method of undercutting before coal was blasted down, and how it was loaded into mine cars. Nearby the massive stone Powerhouse and Bathhouse (c. 1908), now a museum of mining, was an essential building in the mining process. Its power production was only slightly more important than its cleansing function for the men who worked in shockingly grimy conditions. The building has a deck-on-hip roof surmounted by a long monitor roof with clerestory lighting.