Historical clue formulations

• Lubricants used in oil drilling — 2024-10-12
• Mucky substances — 2022-03-20
• Oozy mixtures — 2008-11-23
• Some spa mixtures — 2004-03-18
• Stirs up the sediment in — 2003-09-12
• Flood residues — 1994-10-21