Coal mine

   First, you should make sure that your plot contains coal. A coal mine increases the index of coal mined and the number of workers who can simultaneously work on the plot.

   The construction process consists of 3 stages. You must complete these stages to get the finished building and bonuses it provides. First, make sure that you have all the required resources and materials to start the construction process. You can hire additional workers if you don't have enough free hands or necessary tools. Simply create a work order to do so.

   After this you may to raise your business to the next level! With this update, a coal transporting railway will be constructed which is going to affect the efficiency of coal mining. After this development, you'll be able to hire additional workers and speed up the mining process. Won't that be grand!

 

 

   Below you can see Coal mine construction stages.