My grandfather worked in a factory, it's a place where workers manufacture goods or operate machines that process one product into another.
That's interesting! Did he work in a factory for very long?
Yes I believe for almost 20 years, back then they only had small amounts of machinery and sometimes even fewer than a dozen workers, so he was always in need.
That's great! What kind of work did he do in the factory?
I think he worked in a factory that made continuous materials, like refined oil products, but I could be wrong.
That's cool!  Was he a supervisor or anything?
I think at one point he became a supervisor and was transferred to a separate factory that had more chemically-intense manufacturing, so it was called a plant and not a factory.
I'm sure he was a hard worker in that factory!  Is he retired now?