Recipe/Gravel
Unlocked by researching 
Concrete Production
| Inputs |  Mineral Rocks
|
2 |
|---|---|---|
| Outputs |  Gravel
|
6 |
| Crafters |  Crusher I
|
 Crusher II
|
|---|---|---|
| Time per craft | 12 s | 6 s |
| Input Rates | ||
| Mineral Rocks
|
10/m | 20/m |
| Output Rates | ||
| Gravel
|
30/m | 60/m |
Foundry Wiki
Unlocked by researching Concrete Production
| Inputs | Mineral Rocks
|
2 |
|---|---|---|
| Outputs | Gravel
|
6 |
| Crafters | Crusher I
|
Crusher II
|
|---|---|---|
| Time per craft | 12 s | 6 s |
| Input Rates | ||
| Mineral Rocks
|
10/m | 20/m |
| Output Rates | ||
| Gravel
|
30/m | 60/m |