Hematite, 94
My final 34.11 fortress, Equivalencegears, nears the second phase of my first large project: a 12-Z high, 65x65 obsidianizer. The final touches to the screw stack have been met, and it awaits only wind power.
The fortress is set up in the middle of 3 natural peaks blocking major highways, with the central peak serving as a 'temporary' fort, intended to be the eventual home of the military-only dwarves (and defense stuff), while the to-be-created obsidian tower will house the majority of the population and the industry.
A road is in the works which will house defensive fortifications, trade depots, and diplomatic housing, which will travel between the two towers. Given the position of the natural peaks, this road will eventually be the only way to pass E-W through the map; this passage is on hiatus until the obsidianizer is complete, though.
Once it is working, I intend to carve out a pleasant tower from the raw obsidian, with every surface engraved, and a multi-z level main hall with engraved obsidian pillars serving to hold things together.
Being DF, I have had a few issues along the way in the current 8 years of the fort. Recently, I opened up the 3rd caverns to get some candy, and unleashed no fewer than 9 forgotten beasts at once which had been accumulating. 5 of them were trapped, and the remaining 4 fell to my dwarves, with one casualty, and a few dwarves infected with advanced rot. Unfortunately, my well is now full of multiple kinds of forgotten beast extract. Not wanting to take chances, I have switched to a backup water supply (purified surface pools).
If anyone reading happens to know, I would love to find out if dwarves can get infected by forgotten beast extract from drinking contaminated water. I am tempted to experiment, but my population is low and I fear the consequences (maybe when I can isolate some dwarves, i will). My well is nearly at the magma sea - the only water in the caverns was the LAST normal Z layer - and relocating it is a pain (it is central to my main stairwell, etc).