Complex sentence: This mine was worked from at least 1789 until the seam was exhausted in 1985 following the UK Miners' Strike (1984-1985) and work was started to convert it into a museum.
Split into simpler sentences: This mine was worked from at least 1789 until the seam was exhausted in 1985. Following the UK Miners' Strike (1984-1985), work was started to convert it into a museum.