Hey, in Silver Mining you should also add in Crafting Guild. They have 6 Silver rocks bunched up together and in about 40% of the worlds, no one is mining rocks their because you need 40 crafting to enter the guild. The Crafting Guild is also not too far from East Fallador Bank. IMO this is the way to go since 6 free silver rocks, medium distance from bank is way better than coal. Silver is around 300gp+ if you have a good amount of them and that's double coal. However some people tend to take your spot so you may have to switch worlds every half hour or so.. Hopefully I helped :)