This isnt a major issue, but Crushing Industry makes concrete a must-have for most production lines with a new liquid mix that is needed for the creation of electric furnaces among other things. This means that to make the purple science for magic science, I need to import concrete or iron ore to make the mix with.
Its a minor thing as i can certainly do that, but it could get in the way of larger factories - and while not needed, having concrete to pave a factory is a creature comfort. Is there any chance you could add a Igrys concrete recipe? Perhaps the Tesseract could act as a base with stone and water. No worries at all if its not something youre interested in adding, just thought I would bring it up.