Historical clue formulations

• Big bang creator — 2017-09-03
• Powerful explosive — 2017-06-12
• Powerful explosive — 2012-08-18
• Explosive of old — 2010-12-15
• Explosive stuff — 2010-03-20
• Explosive mixture — 2010-03-07
• Bygone explosive — 2008-03-14
• Stuff in a bomb — 2007-08-03
• Big bang creator — 1999-06-27
• Blasting compound — 1995-10-28
• Explosive compound — 1995-03-28
• Powerful explosive — 1994-11-27