About: Simcity Coal Mining Tutorial (Tips & Tricks)
If you want a dedicated storage depot for coal or whatnot, be sure to sell off the default freight spot and put coal there aswell. You can also remove the garages if you are using it for selling, they are only needed to distribute the product within your city.
Same goes for other buildings (Example: The coal power plant starts with the worst plant, replace it with a higher one if you want less pollution or some such)
You don't have to use your own resources, simply import a bunch and then switch to export. It still counts and goes much faster.
Where is the rest? :D