Monument Progresses Flotation Commissioning at Selinsing
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February 27, 2023 News Release Release #01-2023
Monument Progresses Flotation Commissioning at Selinsing
- The first filtered gold concentrate produced on December 27th, 2022
Vancouver, B.C., February 27, 2023, Monument Mining Limited (TSX -V: MMY and FSE: D7Q1)
("Monument" or the "Company") is pleased to update the progress at the Selinsing Sulphide Project. With
the completion of the flotation plant construction at the Selinsing Gold Mine in Malaysi a, the sulphide
treatment plant has been placed into commissioning after the oxide plant production ceased in mid -
November 2022. The first gold concentrate was filtered on December 27, 2022 and the ramp up period
commenced in January 2023.
President and CEO Cathy Zhai commented, “During commissioning we have identified some bottlenecks
and are working with Mincore to fix them. Up to date the flotation plant has delivered saleable
concentrate of approximately 1,707 dry tonnes at 35.12 g/t Au with gold content of 1,928 troy ounces. In
the meantime, with unexpected heavy rainfall in the dry season , we also are focused on acceleration of
the mining rates to fulfill commercial production requirement.”
Figure 1. Flotation Plant Figure 2. Plant Inspection
Flotation Commissioning Progress
The commissioning stages include: (1) preparation - to confirm the completeness of construction and
deliver the commissioning plan for test work, (2) dry commissioning - to test if mechanical, electrical and
electronic equipment and components in the circuit are installed correctly and completely according to
designed protocols and their availability, (3) wet commissioning - to test circulation of water through the
flotation circuit and the plant as a whole ensure the water and pumping system up running for the
designed purpose;(4) ore commissioning - to start-up with first fill to verify flotation performance and
tune it to meet the designed performance in connection with front end circuit, this includes but not limited
to the control level, the flows in relation to each components in the circuit and to overall treatment
process, the water balance and mass balance. During the commissioning process the bottlenecks will be
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identified and corrected.
After the start-up ore commissioning, a ramp up period will tune the plant under increased mill feed and
required conditions until commercial production is reached. The management and board would consider
the commercial production is reach ed when the flotation plant is running for 30 days continuously with
production at 85% to 90% designed capacity.
Progress Highlights
• Construction of the flotation plant completed except weighbridge and the concentrate storage shed.
• Dry and wet commissioning completed on flotation cells, concentrate and water recovery thickeners,
reagents mixing and storage, blowers, compressor and filter press plant.
• Ore commissioning started on December 15th,2022 with assistance from various consulting engineers:
Mincore (engineering design), Metso -Outotec (thickeners), BGRIMM (flotation cells), Powerwell
(MCC), Enertech (PLC and SCADA control system), McLanahan ( filter press ) and ISI Control
(instrumentation control).
• Ongoing improvements to flotation circuit, correcting shortfalls identified during ore commissioning
period.
• Flotation plant currently operating at 90% capacity and expected ramp -up to design capacity of 119
tph in March 2023.
• As of February 22nd, 2023, a total of 1,707 dry metric tonnes of gold concentrate have been produced
with an average gold grade of 35.12 g/t Au (1,928 troy ounces).
Figure 3: Operating Scada System Figure 4: Concentrate Filter Cake Stockpile
Commissioning Technical Findings and Ramp up
As of February 22, 2023, a total of 1,707 tonnes of flotation concentrate have been produced at an average
grade of 35.12 g/t Au. The flotation plant is currently operating at a mill feed rate of around 120 wet
tonnes / 107 dry tonnes per hour or around 90% of design capacity. Th e mill feed rate will be increased
over the next month with the aim of achieving and maintaining the design capacity of 119 tph by the end
of March 2023.
Some bottlenecks were identified during ore commissioning period that took longer time than expected,
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mainly caused by design deficiencies . While temporary solutions are in place to tune the plant to reach
designed protocols and production level, actions have been undertaken to receive and review redesign
from Mincore.
Both the flotation concentrate and the water recovery (flotation tailings) thickeners were successfully
commissioned. The performance was compromised however by design deficiencies in relation to flotation
tailings management ; a stilling well was installed that stabilized the tailings pump operation as a
temporary solution; the revised design for a tailings hopper sent by Mincore is currently under review.
The flotation concentrate pipeline and launder were found to be undersized; a new pipeline will be
installed and new launder fabricated once the design is received . The concentrate thickener underflow
pump has at times struggled to deliver concentrate to the filter press surge tank and modifications to both
the pump suction and delivery lines are planned. The concentrate thickener overflow delivery line was
undersized; an additional bigger diameter pipeline was installed as an interim solution; bigger pumps and
pipelines will be installed.
The concentrate filter press has been successfully commissioned and initial filter cake containing around
20% moisture ha s been produced . Filter press commissioning was assisted by the manufacturer
McLanahan who had direct on-line access to the control scr een. Minor adjustments have been made to
the automatic control system in an effort to lower the moisture level, this has been helped to some extent
by coarsening the grind size and reducing the slimes content of the flotation concentrate.
In addition to the flotation plant construction, most ancillary buildings have been completed apart from
the final concentrate shed, due to start in March 2023. Mechanical installation has been completed except
for the weighbridge, which is ongoing, and the bagging system that has yet to be delivered. Power and
instrumentation cabling have all been installed apart from that for the concentrate shed, the weighbridge
and the bagging system.
About Monument
Monument Mining Limited (TSX-V: MMY, FSE:D7Q1) is an established Canadian gold producer that 100%
owns and operates the Selinsing Gold Mine in Malaysia and the Murchison Gold Project in the Murchison
area of Western Australia. It has 20% interest in Tuckanarra Gold Project jointly owned with Odyssey Gold
Ltd in the same region. The Company employs approximately 200 people in both regions and is committed
to the highest standards of environmental management, social responsibility, and health and safety for
its employees and neighboring communities.
Cathy Zhai, President and CEO
Monument Mining Limited
Suite 1580 -1100 Melville Street
Vancouver, BC V6E 4A6
FOR FURTHER INFORMATION visit the company web site at www.monumentmining.com or contact:
Richard Cushing, MMY Vancouver T: +1-604-638-1661 x102 [email protected]
"Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies
of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release."
Forward-Looking Statement
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This news release includes statements containing forward -looking information about Monument, its business and future plans
("forward-looking statements"). Forward-looking statements are statements that involve expectations, plans, objectives or future
events that are not historical facts and include the Company's plans with respect to its mineral projects and the timing and results
of proposed programs and events referred to in this news release. Generally, forward -looking information can be identified by
the use of forward -looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled",
"estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variatio ns of such words and phrases
or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved ". The
forward-looking statements in this news release are subject to various risks, uncertainties and other factors that could cause
actual results or achievements to differ materially from those expressed or implied by the forward-looking statements. These risks
and certain other factors include, without limitation: risks related to general business, ec onomic, competitive, geopolitical and
social uncertainties; uncertainties regarding the results of current exploration activities; uncertainties in the progress an d timing
of development activities; foreign operations risks; other risks inherent in the min ing industry and other risks described in the
management discussion and analysis of the Company and the technical reports on the Company's projects, all of which are
available under the profile of the Company on SEDAR at www.sedar.com. Material factors an d assumptions used to develop
forward-looking statements in this news release include: expectations regarding the estimated cash cost per ounce of gold
production and the estimated cash flows which may be generated from the operations, general economic factors and other factors
that may be beyond the control of Monument; assumptions and expectations regarding the results of exploration on the
Company's projects; assumptions regarding the future price of gold of other minerals; the timing and amount of estimated future
production; the expected timing and results of development and exploration activities; costs of future activities; capital an d
operating expenditures; success of exploration activities; mining or processing issues; exchange rates; and all of t he factors and
assumptions described in the management discussion and analysis of the Company and the technical reports on the Company's
projects, all of which are available under the profile of the Company on SEDAR at www.sedar.com. Although the Company has
attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking
statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no
assurance that such statements will prove to be accurate, as actual results and future events could differ materially from th ose
anticipated in such statements. Accordingly, readers should not place undue reliance on forward -looking statements. The
Company does not undertake to update any forward-looking statements, except in accordance with applicable securities laws.