Historical clue formulations

• Bit of green legislation — 2025-08-17
• Measure opposed to strip mining, e.g. — 2020-05-21
• Anti-fracking legislation, e.g. — 2018-10-25
• Prohibition of strip mining, e.g. — 2016-03-09
• Body of environmental regulations — 2014-04-08
• Ban on strip mining, e.g. — 2012-06-07
• Mandatory recycling, e.g. — 2011-05-22