Coal Field
| “ | A resource field for collecting Coal to be used as fuel, for production at Facilities or taken to a Refinery. | „ |
| — In-game description |
Coal Fields 
are Resource Fields where Players can manually collect Coal 
, which can be refined into Gravel 
at a Refinery or into Coke 
at a Coal Refinery. Mining at a Coal Field produces Coal faster than with an automated Stationary Harvester.
Their locations are always shown on the map, they are randomly selected by the game at the start of each war and doesn't change for the whole war.
Description
A Coal Field is composed of a large indestructible center piece with Coal nodes spawning around it. The center piece is a large black piece of coal, which looks similar in design to the Sulfur Field's center piece. Unlike the Sulfur Field, the Coal Field's center piece does not emit fumes around it.
Coal Fields cannot be destroyed.
Usage
Coal nodes are harvested by hitting them with a Hammer or Sledge Hammer, or Harvester (hold Left Click). The Coal Field starts with 30 nodes spawned on the ground, and 250 more in reserve. When a node on the field is harvested, a node from the reserve is spawned in after a few seconds. The amount of nodes left in the field's reserve can be seen by hovering your mouse over a field's icon on the map (only if your faction owns the Region Zone it's in) or by pressing E on a field's large center piece. The appearance of the large center piece also becomes more depleted the fewer nodes are left in reserve. Once fully depleted, the field replenishes after 80-140 real life minutes (depends on player population). If you mine the reserve nodes till around 20, the number shall drop suddenly to zero and then respawn counter starts. If the field is left with nodes (after resetting), they shall add to the spawned number, i.e, you can have fresh Coal Fields with more than 250 nodes at start
When mined, a node splits into two smaller pieces which themselves split into even tinier pieces. Fully mining one node yields 270 Coal by default, meaning an entire field is worth more than 67500 Coal.
Resource Transport
Collected Coal is used as fuel for locomotives, it can be refined into Gravel at a Refinery or into Coke at a Coal Refinery.
Resource Containers can be brought by Flatbed, Barge, or Freighter then unloaded with a Crane at a resource field to be manually filled with raw resources. The container can hold way more resources than Trucks.
High Yield Nodes
Occasionally, a Field will spawn a High Yield resource node. These are identified by a bright spot of light on top of them and yield a much higher amount of resources when you harvest them.
You do not have to directly hit the spot of light in order to gain the resource bonus, as simply harvesting them will reward you with the extra resources.
Stationary Harvester
Up to three Coal Stationary Harvesters can be built right next to the field to automatically mine Coal from the field's reserve. (Nodes that are spawned on the field will not be harvested)
Hovering the cursor over the field's icon on the map will show you how much resource is currently stored in the field's Stationary Harvesters.
Stationary Harvesters (Coal) must be unlocked in the tech tree.
Gallery
A Coal Field; note the large central rock which is unminable.
Coal Field close-up.
How a coal field look on the map.
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