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The Vancouver-headquartered resource developer plans to publish an updated mineral resource estimate for the Palmer project in the next few weeks, on which the PEA will be based.
The project is being advanced as a joint venture between Constantine (51%) and Dowa Metals & Mining (49%), with Constantine the operator.
In parallel with the resource update and PEA work, engineering, geoscience and environmental consulting firm Klohn Crippen Berger will complete the water and waste management design components.
"While the Palmer PEA gets underway, we continue to very actively explore the Palmer project with a 10,000-metre drill programme focused on resource expansion and regional targets, including the AG Zone where recent drilling has significantly expanded this new high-grade discovery," president and CEO Garfield MacVeigh said.
Palmer is a high-grade volcanogenic massive sulphide-sulphate project, with a 2015 inferred resource of 8.1 million tonnes grading 1.41% copper, 5.25% zinc, 0.32gpt gold and 31.7gpt silver.
