WA1 Resources (ASX:WA1) has posted the latest testwork results using its niobium ore, hitting grades of 66.9% at a 99.9% recovery. The company described the results as “excellent” on Monday, highlighting the refining stage is the “second of three stages in a conventional ferroniobium process flowsheet.” With concentrate grades of ~70%, the company says it can now use the material it collected in early 2024 to go ahead with the final stage of ferroniobium production. HotCopper users were bullish on the news – WA1 Resources is the face of the niobium exploring thematic; the stock was once less t…