If I purchased a steel mill and was the sole oener/operator is that personal property?
No it’s private property you’re a petty bourgeois/small proprietor.
what if it is only used for hobby projects and not for profit?
If you’re not selling what you make it’s personal property.






As you can in China I’d advise looking into nail houses where you can delay them so long that you don’t even have to give up your house/land. Most people just choose not to given the new accomodation is generally better/more modern alongside a payout.
Also
Adolf is that you?