View source for Advanced Coal Shaft

{{module infobox
| image = advanced coal shaft.jpg
| cost = 50,000 
| upkeep = 250 per hour 
| ploppable = [[Advanced Coal Mine]]
| requirement = 
| function = • Increases [[coal]] production rate by 48 tons per day
| limit = 8
| extra =
| description = Extract massive amounts of coal faster by adding another shaft to your Advanced Coal Mine. 
}}

{{Mining}}