So I can convert my visitor tavern into a drowning chamber? I assume the tables and chairs would be fine...
Any other ways I can make this mining operation more efficient?
Get a burning wooden master work in a near by chamber, tavern should be 2 urists tall, make an airlock into and out of the chamber with an air vent from the artifact chamber to the tavern seperated by a grate and a bridge.
Side:
|Tavern[==/[__a__|
|_______|
Top:
_________________
| _______ |
| | [_/| |
| | ______| |
|____M___________|
M =Magma coated ramp
[ = Grate
/ =Bridge
A burning artifacts
Basicaly a wooden artifact will never stop burning unless put out so you can have a cart holding the artifact sent down a shallow pit of lava (1to 2/7) where it will light on fire and continue to burn as it goes around the tracks producing smoke, this chamber should be seperated from the rest of the fortess, perhaps through air locks and will be powered by rollers.
When you wish to harvest the visitite seal in the ore to prevent your greedy dwarves from rushing in to steal it for themselves, and punish those who decide otherwise against the warnings, and lower the bridge. Smoke will flood into the room and will cause injury to those inside eventualy and make them pass out.
When they are all dead or properly incapacitated, open the tavern to the outside, let the smoke clear out, unseal it completely, and collect your reward.
Another thing similar to this you could do is send a bunch of carts ladden with junk through the top levels down to the bottom area at high speed where they can then bounce around and fling their contents around killing and injuring people.
Also if you burrow your dwarvs outside your visitor tavern they shouldn't be able to go in, you can then have a second burrow that includes the tavern for your tavern keeps and just use military squades to move them out when you wish to harvest the visitite they've uncovered for mining.