Trommel

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Size 1x1
Tech Required Mining
Cost 5,000 Coins
Upkeep 1,000 Coins/Day
Hammer Cost 800
Hitpoints 200
Points 1500
Limit Per Town None
Specials None
File:Trommel.png
A trommel by a pasture

Improvement Structure Trommel

The Trommel is a unique structure that compliments mining by allowing miners to dump their excess cobble stone into the Trommel to screen it for precious minerals that may have been missed. The Trommel consumes the cobble stone and in return has a small chance of generating Iron, Gold, Diamond, Emeralds and Chromium Ore. The Trommel excretes gravel with a 1:1 ratio as a bioproduct of the screening. Both the gravel and the precious minerals are stored in a single double chest. If the storage chest becomes full the structure will jam and stop working until the storage chest is cleared. It is important that the Trommel's storage chest is emptied often or it will not function.

Besides buying it from other players or the Global Market, the Trommel is the only way to generate Chromium Ore which is an important ingredient in higher tier gear.

How does the Trommel work

The Trommel is very simple to operate, simply select the stack of cobble you wish to deposit it into the input chest. The cobble stone will then start processing and generating gravel and sometimes, if you're lucky, precious minerals.

File:Trommelwikiexample.jpg

Screening Chance

The following chances do not take into account the diminishing chance caused by a lower chance item being generated. The trommel randomly picks a number between 1-10000. This number is then checked against the lowest chance item first.

Item Name Chance Level Required
Gravel 100%
Dirt 75% LVL 2-4 minerals
Polished Mineral 10% LVL 2-4 minerals
Iron Ingot 6%
Redstone 4%
Gold Ingot 2%
Tungsten 0.75% LVL 2-4 minerals
Diamonds 0.5%
Emeralds 0.2%
Chromium Ore 0.008%

Governmental Effects

As of version 1.757, the trommel is affected differently by government changes due to a refactoring of the code. This change makes Despotism run twice instead of greatly increasing the chances for all items. Inversely, Monarchy and Theocracy now have a 20% failure chance instead of changing the chances for items.


Trommel Upgrades

As of Civcraft 1.6, you can now purchase upgrades to the Trommel. These upgrades allow the trommels in your town to process higher levels of minerals: Granite, Diorite, and Andesite. These higher level minerals have a chance to drop additional items, like Crystals

Trommel Level Gravel Granite Diorite Andesite Upgrade Cost Tech Required
1 [X] Free Mining
2 [X] [X] 5,000 coins Masonry
3 [X] [X] [X] 10,000 coins Adv. Masonry
4 [X] [X] [X] [X] 20,000 coins Alloys

See Also

Tutorials CivCraft Defensive Structures Civ & Town Structures Tile Improvements Wonders Units Command Reference