I returned home late, so had a maximum of 2 hours to play.
Went to the Aughundell mines to mine granite. Yes, it was guarded by two unfriendly Nickel golems, but most time they were polite enough not to touch me. This time I had to make 150 granite blocks while cargo disk and inventory could hold about 120.
It meant I had tu run to Aughundell, deposit to vault, go to Bristugo, add blocks to structure...and return to Aughundell, go to mines, make more blocks and return to Bristugo.
One Dragon needed 10 Obsidian bricks which was -once again- a good chance for me. Went to volcanic world of Dralk, gathered more Obsidian than i needed...and made some blocks as well as 10 bricks. However, with Obsidian I still have some problems: skill (Masonry) is too low to add at the best ratio 2:1. I still have 3:1 which means I will blocks and keystones will require more raw Obsidian and I should have 300 blocks instead of 200
Result: almost finished Mason lvl.66 and storage silo finished by 75%, one Dragon helped: rather good day in Istaria.