Possible Clues:

• Make changes to stop allegation restricting old scientist
• Friend to a key metaphysician and a scientist digging herself into an early grave presumably
• One who studies fossils
• Friend to a key metaphysician and a scientist digging himself into an early grave presumably
• No forward-looking scientist freely goes to an oil plant that's nameless
• Review revolution with Russell - the philosopher interested in being consumed by having an old bone to pick
• One looking into past pressure over allegations 'too corrupt'
• Old scientist? That could be close to the bone!
• Likely an excavator at first, aware of record, one absorbed by early life?
• Scientist — one gone all too crazy in bygone times?