Wellgreen Project Preliminary Economic Assessment ... - OTCIQ.com

PHASE V
During Phase V, the pit will expand to the east and south; the remaining mineralized
material inside the base case pit will be mined to achieve the final highwall. Phase V
will involve mining 97.9 Mt of mineralized material. Phase V corresponds to Pit Shell
26 and the end of the LOM.
Figure 16.10 3D Rendered Image of Year 38 Pit and Mineralized Area
16.5.1 IN-PIT ROAD WIDTH
In-pit ramps were designed with an overall ramp width of 35 m, and a maximum
gradient of 10%. A safety berm and an internal water ditch will be provided for two
lane traffic to accommodate 225 t haul trucks.
16.5.2 PIT WATER HANDLING
The progressive development of the open pit will result in increasing water infiltration
from precipitation and groundwater inflows. As the pit deepens and increases in
footprint, it will be necessary to control water inflow through the construction of in-pit
dewatering systems such as drainage ditches, sumps, pipelines and pumps.
16.5.3 WASTE ROCK DISPOSAL
Waste rock stockpile locations will be established at the east side and the south side
of the final pit boundary.These locations will be further evaluated in the next level of
study, with further discussion on terrain, geotechnical, environmental, etc. aspects.
Prophecy Platinum Corp. 16-17 1193460500-REP-R0001-02
Wellgreen Project Preliminary Economic Assessment,
Yukon, Canada