Limestone Quarry is the source of limestone that can be processed into cement in Cement Works.
The base building produces 2 units of limestone each Game tick. There are two extension buildings available, both increasing the production. Fully upgraded Limestone Quarry produces 4 units of limestone every Game tick.
Some of the buildings can be connected to the electrical network from Era 5 onward, which will increase their production. The amount of electrification production bonus (if applicable) is shown in the brackets at each extension.
The base process of Limestone Quarry is:
|Limestone quarry||-||2 + (1 )||1||3x3|
|-||2 + (2 )||2||2x2||-|