• Conducted topographic surveys and alignment marking using total stations and GPS.
• Observed tunneling works including excavation, rock bolting, shotcrete, and lining.
• Learned concrete mix design, production, and quality control at batching plants.
• Participated in site walkthroughs on intake structures, surge shafts, and diversion tunnels.
• Gained insight into safety, planning, and engineering in large-scale projects.