 In that year, Boswell produced 204,592 tons of coal, while Jerome produced 816,568 tons, four times as much.The Boswell mine closed on March 29, 1939, due to the excessive cost of transporting coal to the surface (the Jerome mine worked until 1954).The Boswell tipple was dismantled in 1940, though some of the tipple's abutments still stand today.