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Investigator Resources advances work for Paris definitive feasibility study

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By Imelda Cotton - 
Investigator Resources ASX IVR Paris Definitive Feasibility Study DFS environmental
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Investigator Resources (ASX: IVR) has progressed some of the key work packages needed to advance a definitive feasibility study (DFS) for its wholly-owned Paris silver project in South Australia.

The study is due for completion in the upcoming year.

The company has appointed brownfields consultancy group JBS&G to undertake environmental field work and assessment including a comprehensive flora and fauna survey which commenced this week.

Design and costs

Listed engineering, procurement and construction contractor Mincore has been appointed to complete design and cost estimation for the project’s processing plant and infrastructure.

Mincore previously completed similar work for the Paris pre-feasibility study (PFS) in 2021 and has been re-engaged for its existing knowledge of the project.

The firm’s scope of work includes a review of process plant design and layout drawings including equipment arrangement; infrastructure requirements; and the delivery of utilities such as power and water.

It will also be responsible for capital cost estimates for the purchase, construction and commissioning of project facilities.

PFS project manager MinAssist will continue to provide key support and act on behalf of Investigator as the owner’s representative for all engineering tasks related to the DFS.

Hydrological modelling

Investigator has conducted hydrological modelling at Paris since drilling and pump testing wrapped up in July.

The modelling of groundwater within the deposit has been completed including regional gradients, geological domaining and modelling of dewatering aspects of the proposed open pit.

Modelling of water availability at the Hector bore field – considered a potential source of process plant water supply — is in progress.

Hydrological work has generated key data for a geotechnical assessment of the deposit ahead of re-optimisation.

All work has been based on the Paris mineral resource estimate of 24 million tonnes at 73 grams per tonne silver and 0.41% lead for 57 million ounces silver and 99,000 tonnes lead.

Flotation recovery tests

Metallurgical test work has continued to progress with lead flotation recovery tests being undertaken by ALS Laboratories in Tasmania.

The program of work will determine the potential for lead recovery and an optimised process for extraction.

While lead is a minor component of the Paris deposit and was not considered in the PFS, Investigator said it has potential to add value to the project.