Related Clues:

• Try to find out what's inside
• Test one's metal?
• Measure metal
• Analyze metals
• It tests your mettle listening perhaps to biochemical activity
• Analyze gold ore
• Examine (ore or alloy?)
• Test for purity, as gold
• Test, in a way
• Analyze the makeup of
• ... when, for instance, there's a test
• Test, for example, twice
• Test (metal) for quality
• Trial involving a southern state
• Test (metal)