After building a character specifically to enable building of the mine (those material requirements are rough to do in one go), I have now built the mine.
However after running it for several weeks the Mine overseer repeatedly informs me that there is 10 Obsidian available only. Even if I receive numerous messages over the course of time telling me additional material has been mined. I believe it was intended to add this to a stockpile or you would need to run back weekly to use the material.
I think the computer specs are a moot point on this issue. But I would like to say thank you for the most excellent work on this Mod. I have been really enjoying it.
For V8 i have reduced the timber amount required by 10, this should help with the inventory situation. I have also added a fix for the obsidian not stacking when it should.