G.T.H has 81 engineers and technicians, covering the following specialties:
• 30 hydraulic engineers
• 20 civil engineers
• 06 electromechanical engineers
• 02 mechanical engineer
• 02 computer engineer
• 02 management engineers
• 04 senior computer technicians
• 05 senior hydraulic technicians
• 03 senior mechanical technicians
• 02 senior technicians in electromechanics
• 05 topographers