Gold mine

Gold mine
The gold mine is primarily designed for those wishing to double their gold however it can be used to gain extra farm dollars as well. The gold mine requires licenses are gained as drops when harvesting buildings and fields on your farm. Using these acquired licenses you can run the gold mine.

Lets take a look
Here is a short slide show of how the gold mine looks at different levels.

Cost
The cost of each upgrade to the gold mine can be found below

Benefits
So the benefits of upgrading the gold mine is that it decreases the amount of time it takes to finish. That's all. Below is a table of what you can put into the gold mine and get out. Aswell as this is more information about what each level does for you.