Optic Surveys/GLH DATE June 2014 – Sept 2014 REFERENCE Josh Haynes: 0410 708 537 Brockman 4 – Rio Tinto Provide survey shift cover for road construction. Assist with redesigns for drainage and road extensions. Create Machine Control files for Topcon Machine Control Graders and Excavators. By dsmith_wp_admin|2019-04-17T03:48:35+00:00September 1st, 2014|Rio Tinto|0 Comments