Sabina’s Project includes the Goose and George Project sites, the only sites on the Property with resource estimates. Multiple deposits have been explored at both sites. This Updated Feasibility Study focuses on the Goose Site and on the deposits that have Mineral Resources estimated in the Measured and Indicated categories. Mine planning has been completed for the Umwelt, Llama, Goose Main, and Echo deposits, and excludes Llama Extension, and Nuvuyak.
General Design Parameters
The general open pit design parameters used in the Echo detailed design are as follows:
• Pit walls
- Bench height, single bench mining, 5 m
- Height between catch benches, 20 m
- Bench face angle, 55° to 75° (variable as per Knight Piésold geomechanical guidance)
- Berm width, 8.6 to 10 m (variable).
• Haul roads (in and out of pit)
- Total road width allowance, 20 m
- Running surface on final two-way roads, 15 m
- Berms, 3.8 m wide (40° slope)
- Ditch, 1.0 m wide
- Ramp grades, 10% standard and 12% for pit bottom access
- Single-lane road allowance, 15 m
- Specific areas for caribou crossing may be established.
• Operations road (general light vehicle traffic and occasional heavy equipment)
- Width, 8 m to 10 m
• Mining
- Minimum pushback operating width, 50 to 60 m
- Minimum pit bottom width, 25 to 30 m
- Pit bottom sub-out depth, 5 m.
Op ........
