Off-site Field Trips


Jahna Industries’ Green Bay Sand Mine

Friday, October 5, 2018 |8:30 am – 3:00 pm |$30

Located 5.5 miles north of the intersection of Interstate 4 and US Highway 27, E.R. Jahna Industries, Inc.’s flagship facility, the Green Bay Sand Mine, is centrally located between the Orlando and Tampa, Florida markets. The mine utilizes a primary wash plant and classifying secondary plant. The dredged sand material is initially screened at the primary plant to eliminate oversized debris, clay balls and gravel, then dewatered on dewatering wheels and stockpiled. The ungraded washed sand is then pumped from the stockpile to a secondary processing plant where it is further washed and classified using rising current density separators and cyclones.

This state-of-the-art system is fed by one of two newly refurbished large 24-inch cutter head dredges which hydraulically mine sands of the reworked Cypresshead Formation to a depth of approximately 60 feet below land surface. The redundancies of this location enable the mine to be a reliable supplier of over 2 million tons of commercial concrete sand to the construction industry each year.

Sitting on a footprint of roughly 12,000 acres, the Green Bay Sand Mine is situated due west of the Lake Wales Ridge within the Green Swamp area of Polk County. The mixed land use property consists of mining lands and agricultural operations including citrus, cattle, silviculture, and row crops. The Green Bay Sand Mine is the largest permitted sand mine in Florida operating under a Life of Mine permit from the FDEP, and is poised to meet the needs of the growing Central Florida markets for decades to come.

Field trip attendees will tour the dredge operations, primary plant and secondary plant at Green Bay Sand Mine – as well as a possible stop at the 474 (Independent North) mine if time permits.

Attendees should wear boots or other sturdy footwear.

Transportation will be provided from the RP Funding Center and the Hyatt Place. Lunch will be provided.


Field Trip Registration

  •   12999 E Adam Aircraft Cir
         Englewood, CO 80012
  •   303.948.4200

About The Florida Section

Established in 1949 the Florida Section of the Society for Mining Metallurgy, and Exploration, Inc. (SME) is a legally constituted unit of SME. The SME FL Section helps to enhance the professional development of their members and provide local service to the public.

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