Carbon Brick
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The Carbon Brick is a building material in Arknights.
Item description
A carbon brick used for the facility development of Rhodes Island.
Light and highly pure, it possesses excellent workability, and is instrumental to the success of our operations.
Usage
This brick of carbon is needed for the production of polymer concretes for 
Concrete Building Material needed for the construction of Rhodes Island infrastructure facilities.
A single Carbon Brick is also worth 8 
.
Acquisition
Store
3 Carbon Bricks are sometimes available for purchase at the Credit Store for 200 
.
Regular drops
| Operation | Sanity | Drop(s) | Sanity per drop |
|---|---|---|---|
| SK-3 | 20 |  2 |
10 |
| SK-4 | 25 | 2 |
12.5 |
| SK-5 | 30 | – |
Workshop
| Product | Material(s) | LMD | Morale | Requires |
|---|---|---|---|---|
1 |
 3 |
– | 2 | Clear SK-3 |