English for production workers?

Hi, could anyone please make some suggestions? My line manager has asked me to desing a special English course for production workers. It’s a group of qualified machine operators who didn’t learn English at school. Now they should be prepared for jobs in production facilities. This means they also need basic training in reading and understanding messages and phrases in manuals, instructions and on displays. What I’m looking for right now is a keyword list I can use to retrieve more materials. Could you please help me out by suggesting any words that are related to a job done by a machine operator? Thanks so much.

Hello Jamie (K),

Thank you very much for your information - you have given me an excellent starting point.
I might come back to this discussion later if it’s OK with you.