Today I found and tamed an Oratan Miner. I spent several days hunting Oratan Miners in the Planet Arkadia Underground, mainly in the area located SE of The Abyss, where mid-maturity creatures are found.
And at last it appeared. It was a L24 Oratan Miner Provider (different from the regular L23 Oratan Miner Provider). I am now level 42 in the Animal Tamer Profession, so the mob was not extremely difficult to tame but it took some time to lower its spirit sufficiently. I needed three attempts to be successful.