Possible Clues:

• One who breaks down in the lab? A record producer, we hear
• One tests aluminium buried in some stone
• Mixing any salt, does one work out formula?
• Someone skilled in detailed examination of structure
• Sportscast figure
• One making detailed study
• Outspoken writer of records, dealer in breakdowns?
• Brokerage worker
• Investment house employee
• Statistics examiner