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I've embarked into a mountainous land with no bitumous coal or lignite, and can only find magma in the magma sea. Because of these limitations, I'm going to be migrating my fortress 150 z-levels down; to be closer to my forges (avoiding the fun of magma pump stacks).

My main problem is that 150 squares is a long way to go to put refuse into the outdoor refuse stockpile. Is there some way I can persuade my dwarves to automatically get rid of refuse into the magma sea instead?

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up vote 12 down vote accepted

If you mean a normal garbage dumping zone (i.e. for things designated for dumping), it should be possible to do this by creating one in the normal way - I guess the most sensible way would be to create a channel down from above the magma. You may need to disable any other dumping zones you have to stop your dwarves deciding they'd rather go to the surface.

However according to this wiki entry (spoilers beware), note that "any items dropped into the magma sea (specifically, onto "magma flow" tiles above semi-molten rock) will vanish without a trace".

If you mean for general refuse, I don't think there's a way to dump this automatically. You could keep a refuse stockpile near your magma dump and manually designate things for dumping now and then, but that may be a hassle. Alternatively you could just create a larger indoor refuse pile with appropriate precautions for sealing the resulting miasma inside the stockpile, let the majority of refuse rot away and use any bits that don't in crafting (bones, shells etc).

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I didn't know about indoor refuse stockpiles. Very interesting. I've removed the use of 'dump' in my question to avoid ambiguity. – Stuart Pegg Mar 28 '12 at 12:14

I believe what you can do is channel a hole above the magma sea, build a trapdoor over it, then designate that trapdoor as a garbage dump. Put it in a small room by itself, with a door. Then build a lever outside the room and link it to the trapdoor. When you designate something for dumping, it will be placed on the trapdoor. When everyone is out of the room, lock the door (to make sure no one is standing on the trapdoor) and tell a dwarf to pull the lever, dumping the garbage dump into the magma sea. Also, the door will prevent miasma spreading into the rest of the fortress, should you choose to dispose of refuse and corpses this way.

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That doesn't seem very automatic at all... – Stuart Pegg Mar 28 '12 at 19:31
Well, you have to make a trade-off between automation and safety. You could make it more automatic by placing a pressure plate in a heavily traveled area, and linking that to the trapdoor. Then it would be constantly dumping anything on it into the magma. However, you are very, very likely to also dump dwarves that way. – SaintWacko Mar 28 '12 at 20:12
I reckon the pressure plate idea will result in a mess of job interrupts, which is far worse than dwarf casualties. More importantly, this whole idea just adds an unnecessary step to the process - if a dump zone borders a hole, items will be automatically thrown down the hole. – kotekzot Mar 28 '12 at 20:29
Ah, true. I hadn't put much thought into it, as I didn't consider it a useful idea. Also, I was unaware of the whole 'dump zone bordering a hole' thing, good to know! – SaintWacko Mar 28 '12 at 20:32

Maybe Minecarts could be helpfull? If you know how minecart railgun works You could make minecart refusegun :). You could shoot refuse into magma, outside area, or closed room. You could even kill some goblins using refuse :D

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Hi Phyropylus. If you haven't already, check out the Arqade help centre regarding answers - it is really useful. Hope you enjoy your stay. – Lyrical Sep 10 '13 at 14:31

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