Dredging is used to mine what3/16/2024 ![]() ![]() The State 404 program is a federally-delegated program under the Clean Water Act. Environmental Resource Permitting standards are detailed in Part IV of Chapter 373, F.S., and Chapter 62-330, F.A.C. For mining activities that involve dredging or filling in state-assumed waters, a State 404 (dredge and fill) permit would also be required. An Environmental Resource Permit (ERP) is also required for limestone, shell and dolomite mining projects. Reclamation standards for limestone, shell and dolomite mining are detailed in Part II of Chapter 211, Florida Statutes (F.S.), Part III of Chapter 378, F.S., and Chapter 62C-36, Florida Administrative Code (F.A.C.). The image on the right shows the area which will be destroyed if the Enterprise is allowed to continue, the dredge mining will move over the ore body shown in purple on the left.The Mining and Mitigation Program administers reclamation, environmental resource/stormwater management, and federally-delegated dredge and fill (State 404) permit programs for mining operations in Florida, including limestone, shell and dolomite mines. ![]() (Mapping for Queensland is available from DME”s interactive mapping website: ) The image on the left shows the Department of Mines” mapping of the ore bodies on North Stradbroke Island, marked in purple. See the mining company”s diagram from their Plan of Operations for further detail. The sand residue is then dumped at the other end of the dredge pond, and the dredge then ‘eats’ away at the sand to move the whole dredge pond. This slurry is then processed through a floating Mineral Concentrating Plant, extracting the heavy mineral sands. The dredge sucks up a sand/water slurry from the bottom of the dredge pond. This hole is then flooded with water and a dredge is floated on this ‘dredge pond’. A very large deep hole is dug out of the island using mining machinery. ‘Dredge mining’ is the main method used for obtaining the mineral sands from the Yarraman and Enterprise mines. ![]()
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