I am looking for parts for trainz 12 that are interactive, such as coal mine, airport and container plants. Stations with a purpose. Which are still in the part of buildings, or what can I possibly download.
I suggest registering your TS12 to your account first as many people will simply ignore your question as long as you do not have a legal version of that game registered to your account.
You can do so here: https://www.auran.com/planetauran/SN_Enter_Serialnumber.php
Already done that and still not showing? Contact the helpdesk (link found at the top of the page).
If you have a legal version of the game registered to your account, you can enter those credentials under options and use Content Manager to find exactly those things you are currently looking for.
Based on the versions that are showing next to your screen name (currently only 2 mobile versions), you do not have TS12. Answers on the forum are based on the versions that you have listed. If a version is not listed (and you have it registered to this (wilwi) account)...
I'm not one of the members that will ignore your request, whether you have TS12 registered or not. Go into the DLS, do an individual search for each of the items that you are looking for, and you'll find your requested content.