In September, PetroIneos announced that Grangemouth, one of the oldest oil refinerys in the world, will close in spring 2025, costing almost three thousand jobs directly and in the supply chain.
My guess is this: 3000 jobs
If a refinery were built with today's standards and automation how many workers would be needed for the same refining capacity? Likely a small fraction of the 3000 across the whole supply chain. Labour is expensive.