• agusman rivandy panjaitan Pelaksana Lapangan Proyek at PT. Kaharutama
• Syarief Maulana Supervisor at PT.SUPRA SURYA INDONESIA
• SUPRIYADI ST Koordinator Pengawas Lapangan & Staff Teknik (Kontrak) at CV. CIPTA MANUNGGAL ABADI
• mohd zahir abdullah site supervisor at sunway geotechnic sdn bhd
• MUHAMMAD PUTRA supervisor at PT. HUTAMA KARYA
• Firman Simanullang Survey lapangan at CV.BINA MITRA ARTANAMI
• Dede Adha Carpenter at PT.multi structure
• Gihon S BARISTA at SAUDAGAR KOPI BINTARO
• Dibyo Utomo Site supervisor at PT Wijaya Kusuma CONTRACTORS