According to the Lufkin Line, Kirby Lumber Company had a mill at Blox in 1924. It was not listed in the 1928 Southern Lumberman's Directory of American Saw Mills and Planing Mills. The mill was probably used to support the logging operations at Blox and New Blox.
Blox and its subsidiary New Blox, three miles down the Santa Fe tracks, were major centers for Kirby logging operations. Blox was established in 1918 and cut out by 1933. New Blox, three miles down the tracks, was established in 1924 and cut out by 1940. Between 1918 and 1940, some big numbers were rolled up by the camps. About 1925, the Blox community of about 1500 was cutting about ten million stumpage feet per month for the mills at Roganville and Browndell. With abandonment of Blox, New Blox came into its own. By 1930, supporting a population of about 750, the camp was cutting down about eight million feet monthly. New Blox was abandoned about 1940.