This layer contains boundaries for nonphosphate sites/mines in Florida (nonmandatory phosphate mines are maintained in a separate layer) that are not regulated by the Florida Department of Environmental Protection (Department), Mining and Mitigation Program (MMP), because they were mined prior to the requirement to reclaim or do not qualify as a mine. This layer is not a comprehensive representation of all nonmandatory nonphosphate sites in Florida. It represents specific areas where an inquiry regarding the history or status of a parcel was received and a determination was made regarding the regulatory status of the land as a result of that request. Determinations are typically made based on a review of historical aerials and agency files.