Save the Date!
Center Hill Cemex Trip – 12/3/16




Spur of the moment – we have been gracious to have been given the opportunity to visit the CEMEX Center Hill Mine located in Center Hill, Florida (45 miles West of Orlando) on December 3, 2016, from about 7:30AM to Lunchtime. This will be a joint field trip shared with the Tampa Bay Fossil Club, and a good time to meet and interact with these fine folks. A special thank you goes out to CEMEX for this exciting event.

This will be a great opportunity for fossil hunting. We should expect to find Eocene Ocala Limestone being mined and may also encounter some chert and silicified limestone. Marine fossils are abundant and include mollusks, echinoids, crabs (to a lesser extent) and large foraminifera. It may also be possible to find marine vertebrates (dugong) and terrestrial vertebrates that are associated with infilled karst features that the mining process exposes. Above are a few photos of some chert and fossils that came from adjacent mines. Also included is a picture of the CEMEX dragline. We will get to review their aggregate, limestone and cement mining operations.

Friday Night, December 2, there will be a dinner meeting at a local venue that will include a presentation relating to the trip and a 2016 Year End Business Meeting for SEGS. Details to come.

There will be an attendee cap, so register as soon as you can, and this trip limited to SEGS members. Age limit is 12 years old and up.

Pay for the Trip:

You can use the Field Trip PayPal button on the Membership Page to pay for the trip.

Trip Documents:

pdfCenter Hill CEMEX Trip Announcement (134 KB)

pdfField Trip Registraton Dec 2016 (102 KB)

pdfField Trip Guidelines (101 KB)

pdfSEGS Liability Waiver (105 KB)

pdfMine Pictures (4 MB)



SEGS Logo Shirt Opportunity!

Hey all, SEGS member Scott Nyoff has graciously offered to have our calcite crystal logo embroidered on the front or breast pocket of any shirt(s) that you mail to him with a $12 check per shirt, which includes his cost to mail back to you (SEGS paid the $50 set-up charge). Please take advantage of this offer right away so we can be wearing our colors on field trips.

Mail your shirts with $12 each to:
Scott H. Nyhof, PG, CPG
Senior Project Geologist
Madrid Engineering Group, Inc.
2030 State Road 60 East, Bartow, FL 33830
863. 533.9007 (office)
863. 450.8544 (cell)







2016 Summer Newsletter

Headlines Include:

  • Recap of SEGS Mosaic Phosphate Mine Field Trip
  • SEGS Schedules Next Field Trip for October
  • Introducing Our New Treasurer Andy Lawn
  • Presidents Message
  • GCAGS Annual Convention Scheduled for September
  • AIPG Annual Conference Scheduled for September
  • AIPG Election Result for New Officers
  • Legislative Update

Download the Newsletter!

pdf2016 Summer Newsletter (601 KB)


SEGS is very appreciative of two members who have stepped up to our call for help in developing a scholarship program:
Amy Brown of the Suwannee River Water Management District
Aleta Mitchell-Tapping of Cemex

Introducing Our New Treasurer Andy Lawn

Andy in Ireland

Andy Lawn is proud to have been elected by your SEGS Executive Committee as Treasurer, and grateful for many years of service by Harley Means in this position. Andy served as SEGS V.P. and President in 2010 and 2011, with notable field trips to the Dry Tortugas in 2011 and the Cody Scarp (his thesis area) in 2014.

Andy is Professional Geologist with a Master’s degree from the University of South Florida. He’s a Principal Hydrogeologist and Vice President of HSW Engineering, Inc. (HSW). He opened and operated HSW’s Orlando office for years until recently opening another branch office in Tallahassee.

He has over 20 years experience in public and private-sector work for Diversified Drilling, the Southwest Florida Water Management District, and Engineering firms. He specializes in property evaluations for acquisition, environmental cleanup, groundwater modeling, regulatory compliance and permitting, currently serving on the Board of the Florida Brownfields Association (FBA), which is focused on revitalization of contaminated and blighted properties.

Read Andy’s Introduction Letter to SEGS

pdfNew SEGS Treasurer Introduction (19 KB)