This is a new series that I just picked up. At first I thought it was a manga by Hiro Mashima (Rave, Fairy Tail) but turns out to be by different mangaka named Mizuno Teruaki.
It's a fantasy adventure manga, sets in a world with many wonders and magical creatures (Dragons, etc of course), and it's focusing on 'mining' with lots of various metals with their own uniqueness and ability, almost like magic.
So all this time I thought Miner was never been a cool job, this manga will open your mind about it for a bit. I'm enjoying the read so far~
Summary
In a world where rare metals drive the economy, "Minea", the people who seek out these metals at the risk of their own life, are highly respected. A strange boy called Ruka has wandered destructively into the failing town of Elza, declaring that his goal is to be a Minea! He ends up under the surveillance of a village girl, Shella, whose little brother is sick from a poison gas accident in the town's now-closed mine. But there may be more to this situation than meets the eye! Will Ruka be able to help his new friends, and maybe one day become a legendary Minea?
You can read it here :)
edit : looks like I'm alone :(