The Forth Iron Company took over the Oakley Iron Company around 1860 then amalgamated with the Cowdenbeath Coal Company in 1872. When the Fife Coal Company subsequently took them over in 1896, the Cowdenbeath Coal Company's pits were listed as: Lumphinnans Nos. 1, 2, 7, and 11; Cowdenbeath Nos. 3, 7, and 9; Foulford No. 1 and Mossbeath. This effectively made the Fife Coal Company one of the largest coal-mining concerns in Scotland. Such was the upsurge in mining activity that the population of Cowdenbeath doubled (4,000–8,000) in the ten years between 1890 and 1900 and gave rise to the nickname "Chicago of Fife". This was a significant increase on the 1820 figure of 120.