NI43-101Pre-Feasibility Study Report - page 462

Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 PFS Technical Report
October 9
, 2014
10135-200-46 - Rev. 0
18.2 Upton Hydromet Plant
18.2.1 Access and Site Roads
Access from the Buffalo Creek road will be built to enter the Hydromet facility. The
access will have a gate and be controlled by the main guard post. It will lead to a
parking area and to access roads that will enable circulation around the facility.
18.2.2 Communications
A reliable, state-of-the art communication system will be installed at the Hydromet site
to provide employees with voice and data communication channels.
A parallel wireless communication system based on hand-held mobile and fixed-base
radios will also be available for the operation and maintenance personnel.
18.2.3 Power Supply Facilities
Power to the Hydromet site will be provided by PreCorp at 25kV. A 10 MVA
25kV/4.16kV transformer and its ancillary equipment will be installed to reduce the
voltage to the distribution network voltage of 4.16kV. A capacitor bank will also be
installed to correct the power factor. The current design does not include any
redundancy to feed the plant in case of failure of the main transformer. An emergency
generator will be installed to provide power to critical equipment and utilities only
during a power failure.
A motor control center will be built in the mill building. Large motors will be directly fed
from the distribution line, while small motors will be fed through three MVA
4.16kV/480V secondary step-down transformers at 480V. The HCl Regeneration Unit
will be fed through a 3 MVA 4.16kV/480V secondary step-down transformer. The
Hydromet plant single line drawing is presented in Figure 18.7.
18.2.4 Buildings and Structures
The site plans and general arrangement drawings for the Hydromet are presented in
Figures 18.8 thru 18.11.
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