Robots are working in the mines, oil fields, and handling toxic chemicals. There are at lest plans to get them to remove plastic from the ocean.

They aren't humanoid robots. The "robots" in chemical plants are made of pipes and sensors and valves. The ones in mines have wheels and picks and conveyor belts.

The only jobs left are the ones they haven't figured out how to automate: the people who supervise, oversee and give orders to the "robots".

I would think the reason that those final few jobs performed by humans in chemical plants haven't yet been eliminated is obvious. If an LLM customer service bot "goes rogue" the worst it can do is tell someone that they are entitled to a discount that doesn't actually exist. An LLM "supervisor" for a chemical plant might actually be worse at the job than Homer Simpson.