Question: What types of mines in Florida cover over 450,000 acres?
Answer: Phosphate mines
There are 28 phosphate mines in Florida, and 11 are currently active. Phosphate mines typically range in size from 5,000 to 100,000 acres. Phosphate mining disturbs between 3,000 to 6,000 acres annually in Florida. About 25-30% of these lands are wetlands or other surface waters.