Historical clue formulations

• Fill in a mill — 2026-02-01
• Grain milled into flour — 2025-04-10
• Mill fill — 2024-06-22
• Mill fodder — 2024-03-01
• Useful information, metaphorically — 2023-04-27
• Material for a mill — 2018-05-15
• Grain to crush — 2016-05-01
• Ammunition — 2012-06-30
• Meal — 2012-06-10
• Miller's need — 2010-04-28
• Miller's need — 2009-11-11
• Mill fill — 2009-05-30
• Mill stuff — 2005-07-10
• Meal from a mill — 2000-11-10
• Mill fodder — 1998-06-09
• Ground grain — 1997-10-14
• Kind of mill — 1997-02-18
• Grain for grinding — 1997-01-20
• Unprocessed grain — 1996-02-03
• Mill material — 1994-03-07