Historical clue formulations

• Provide power to — 2025-03-01
• Stoke — 2024-08-15
• Stoke — 2023-11-10
• Peat or petrol — 2023-10-05
• Truck stop purchase — 2023-08-13
• Gasoline or kerosene — 2022-07-19
• Power source — 2022-05-08
• Coal or gas — 2022-05-02
• Stoke — 2021-07-02
• Gas or coal — 2021-06-28
• Logs, for a fire — 2020-09-14
• Sustain — 2020-07-03
• Oil or kerosene — 2019-04-10
• Gas, oil or coal — 2018-05-14
• Fill-up filler — 2017-11-05
• Fire's need — 2017-07-28
• Uranium or plutonium, for a nuclear reactor — 2015-05-11
• What an electric car doesn't need — 2015-03-09
• Precamping purchase — 2015-02-22
• Coke, for one — 2014-01-05
• Peat or propane — 2011-12-07
• Coal, e.g. — 2011-05-01
• Gasoline or peat — 2010-04-26
• Gasohol, e.g. — 2008-09-30
• It may be pumped — 2007-04-21
• Feed — 2005-12-11
• Natural gas, for one — 2002-07-23
• Gas or oil — 2001-02-05
• Petrol, e.g. — 1995-11-01
• Give power to — 1995-10-20
• Ammunition — 1995-09-23