From the RuneScape Wiki, the wiki for all things RuneScape
The Jatizso Mine is found just outside the western gates of Jatizso. To be able to access the mine through its stairwell entry just outside the city proper, The Fremennik Isles quest must have been started. It can be a somewhat dangerous mine, as it is inhabited by male ice trolls (melee) and female ice trolls (range) in the northern half of the mine. It is possible to mine many ores in the northern half of the mine, using the rocks as barriers to the male trolls. And for less venturesome miners, this still leaves plenty of ores to mine in the safer southern half. This mine is a place where players can obtain plenty of Mithril and Adamantite ores fairly close to a bank, in the city outside.
[edit] Monsters
[edit] Personalities
[edit] Quests