Florida lumber industry

Back in the late 1800's and early 1900's, I believe the state of Florida was exploited by several industries for its resources. One resource in particular was lumber. Companies set up towns all over Florida for living quarters for their workers and built a saw mill around it. Once the lumber was depleted in an area, usually a span of 10 years or so, the company moved the town and mill where the resource was plentiful. One such lumber town was known as Sumica, an acronym for the French Company Societe Universelle Commerce de Mines Industrie et Agriculture. Some remains still exist at Sumica - the concrete structures that apparently supported tools of the sawmill.