* Make 1x1 zone (i) as a garbage dump near a bunch of stone. Mass designate the stone to be dumped (d)(b)(d). It will all be dumped in that 1x1 zone. This is considered by some an exploit and it still involves hauling, so the net gain is just in space not time.
* Dump into magma, if available. Same problems as above, but not an exploit.
* Use unskilled miners to dig out worthless rocks. They will go slower, but generate less stone. Pros: Unskilled miners generate less stone. Provide more skill to more dwarves for more attribute increases. Cons: They mine slower. Unknown if it's faster in the long run to mine fast and haul the stone then to mine slow and haul less stone. If they strike ore or gems or flux you have to switch out to your experienced miners to ensure you get the goodies.
* (My personal favorite.) Plop down masonry and/or craftsdwarf shops in the middle of a freshly mined area. Set to making blocks (pros: they stack in bins, useful for building smooth floors and walls cons: they're almost worthless for trade), statues (pros: most valuable base masonry craft, I believe, cons: they don't stack) and rock crafts on repeat. Designate a nearby spot to take the results with bins. Make the shops available only to some unskilled peasants. Once the surrounding stone is consumed, tear down the shops and move on to the next pile of stone. Your rock goes away and in its place you get skilled labor and a gianormous pile of trade goods for the next caravan! Crafts in bins are particularly streamlined for trading. Quantity makes up for quality, I've bought out whole caravans with the results of this.
* Similar to the above, but set up a few practice catapults firing into a wall. Get trained siege operators and destroy your stone at the same time! Alternatively, carve a channel next to the wall. Rather than be destroyed, the stone will fall into the channel, neatly stacked. Should you need it later just cut a ramp into the channel.
|_.CCC***
|_.CCC***
|_.CCC***
| wall
_ channel
. floor
C catapult (facing left)
* stone
* Instead of smoothing rough floors, cover them with stone (b)(C)(f). I also tend to mine out any sand or clay walls and replace them with stone walls.
* Wall in your above ground operations (farms, fishing pools, whole forests...). Before construction, set up a stockpile to take bins full of stone blocks. That way the blocks will be brought to the site in bins rather than one by one.
* Similar to the above, but make 2 story pillboxes to defend outside your fortress. Here's a plan for a siege pillbox accessible only from below. Putting the fortifications a level above the ground means enemy archers can't walk up and fire through them.
Ground Level Upstairs
,,,,,,,, ,,,,,,,,
,------, ,--|---,
,|****|, ,|CCC.|,
,|***X|, ,=CCC<=,
,|****|, ,|CCC.|,
,------, ,--|---,
,,,,,,,, ,,,,,,,,
, Outside
. Floor
* Stone
X Up/Down stair
< Down stair
| and = Fortification
C Catapult
* Ignore it. Designate individual stones which are blocking doors or stockpiles to be (d)umped and (d)(b)(h)ide the rest. Turn off stone hauling on all dwarves.