Firstly Jagex shouldn't have made the dragon axe 40 wc, everything else dragon is lvl 60, the axe should be too. Also you can use Rune Pick axe at 40 mining, no point in letting someone use 2 new pick axes on the same lvl. Its lvl 60 to weild. Look at the ingame wc lvls or axes... a few axes come in pairs (once youa re lvl 6 you get both steel and iron available.) Draong will probably be +10 or lvl 41 mining to weild... or whatever the usual pattern is. Jagex has stopped some patterns since RSC... like dragon 2h due to changed combat system, but the requirements have and will stay intact.