TSX-V-listed Constantine Metal Resources has announced the results of a preliminary economic assessment (PEA) for its 51%-owned Palmer zinc/copper/gold/silver project, in south-east Alaska, demonstrating a “high-quality project with strong economics”. CEO Garfield MacVeigh said on Wednesday that quality North American development-stage zinc/copper projects were in scarce supply, particularly projects with high operating margins and resilience to low metal price environments as demonstrated by the Palmer PEA. (full story)