You first need to have Terratech Mod Manager (TTMM) - details can be found at
this link.
Once you have TTMM installed, one of the options is the Nuterra Block Injector library. Select/download it and run Terratech again. Afterwards a folder will appear in your Terratech steam folder called "custom blocks". Download and unzip my blocks (and any other blocks you like) and put them in that folder. Anything in block packs or subfolders will work, too, so just drag the whole block pack into that folder and it should work.
Ask on discord or in the thread I posted above if you have trouble getting TTMM working.
General reminder, this thread is for black labs released content. If you need help, please ask me on discord, DM me, or post in the
whiteboarding thread. Avoid posting in this thread if you can so when I make new content it is easily visible. Thanks!