i just completed the 2nd achievement 300 mines at a tier 2 for Thanalan.

it took me almost 4 hours....

tier 3 1000 (12 hours) , tier 4 2000 (24 hours), tier 5 4000 (48 hours) and then you are 1/3 the way done so thats round

12+36+72+144 = 264 hours mining before you can get the gold pickaxe....

Ok fine its a long term goal and it makes since if your starting level 1 to have something to work along side 50, but what if your already 50? I have nothing to show for my already accomplished hard work. THIS SUCKS. Can't you let level 50 people earn double achievement points? Not that npc'ing copper ore at level 50 isnt a lot of fun over say... ANYTHING ELSE.