Southern Survey & Design


Passion. Experience. Diligence.


Director of Survey/Project Manager

Casey Doyl Cockrell

A lifelong resident of East Texas, Casey graduated from Texas A&M in 2004 with a liberal arts degree. His experience in construction and geography led him into surveying. For the next five years, Casey worked at a major engineering firm. In 2007, he passed the Fundamentals of Surveying exam administered by the NCEES, in 2009 he became licensed by the Texas Board of Professional Land Surveyors, and in 2016 became a Licensed State Land Surveyor for the state of Texas. In December of 2018, Casey graduated from Texas A&M Corpus Christi with a Masters in Geospatial Systems Engineering. Casey started Southern Survey Company at the request of his clients and operates a surveying department in East Texas daily. His family resides in Longview and is regularly involved with Mobberly Baptist Church



Texas A&M Corpus Christi
M.S., Geospatial Systems Engineering, 2018

Texas A&M College Station
B.A., History/Geography, 2004

Activities & Affiliations

• TSPS, Member
• NSPS, Member
• APSG, Member

Licensure and Certifications

• Texas, RPLS, LSLS, CFedS(Expired)



Project Manager

Adam Maywhort

Adam completed his B.A. in Communications at the University of Southern Mississippi, Hattiesburg in 2003. In 2007, he received a Certificate in Surveying from Tyler Junior College and began working as a CADD technician in the Dallas area for G&A consultants and SAM, Inc. In 2011, Adam became a Texas RPLS No.6341 and began managing survey projects for the next three years in the petroleum industry. After relocating to northeast Texas from south Texas, he became a Project Manager at Southern Survey and Design.



University of Southern Mississippi
B.A. in Communications, 2003

Tyler Junior College
Certificate in Surveying, 2007

Activities & Affiliations

• TSPS, Chapter 4 Director
• LSPS, Member
• IRWA (International Right of Way Association), Member

Licensure and Certifications

• Texas, RPLS
• Louisiana, PLS



Office Manager

Ted Rankin, Jr.

A graduate of Longview High School, Ted attended LeTourneau University and graduated in 1998 with a degree in Business Management. In 2001, Ted graduated with a Master of Business Administration from LeTourneau University. He currently works as the Survey Office Manager and continues to fill the gaps in workflow, consulting with our clients, drafting, and maintaining field data. An entrepreneur, his focus at Southern Survey Company is in strategic marketing and business administration. He attends Saint Mary’s Catholic Church in Longview and works on his family’s cattle ranch North of Longview.



LeTourneau University
Business Management, 1998

LeTourneau University
M.B.A., 2001

Activities & Affiliations

  • Knights of Columbus

  • Oil Belt Farm and Ranch Club

  • NRA & TSRA



Project Manager

Darrell Binnion

Darrell began his career at Southern Survey and Design in 2013 and operates as the lead GNSS technician and Field Crew Coordinator. His responsible charge resume allowed him the opportunity to work in sales and customer service early in his career with the company and he continues to specialize in project management from a Party Chief position. The implementation of new technology and workflow hinges on Darrell leading the way. Darrell is also involved in remote data collection techniques using UAV’s and comprehensive GIS data collection techniques.



Survey Intern

Merritt Edge

Merritt became a part of the Southern Survey and Design team in 2017. As a local East Texan and Gilmer native, Merritt joined the United States Marine Corps in early 2007. After two tours around the world and receiving an honorable discharge, Merritt returned home and enrolled in the Surveying Program at the University of Texas at Tyler. After receiving a Bachelors in Industrial Technology, Merritt passed his Fundamentals of Surveying exam in May of 2018. With high attention to detail and strong leadership abilities, he continues to gain experience with representatives and clients.  Merritt and his family are active members of Grace Creek Church in Longview, Tx.


United States Marine Corps 2007-2012
Bonhomme Richard, 11th Marine Expeditionary Unit, 2009
Naval and Marine Corps Achievement Medal, 2010
Helmand Province, Afghanistan, 2011
Honorable Discharge, 2012


University of Texas at Tyler B.S., Industrial Technology, Minor in Business Administration
Emphasis of Surveying and Mapping, 2017.