The Swarm - A swarm of insects common anywhere in Runescape. They will attack you hitting occasional 1’s. There has been no way currently to defeat them, just run away and they will disappear.

Rock Smoke - The rock will literally start to smoke and if you keep mining, will blow up you pickaxe. Take to the Dwarven pickaxe salesman to fix it for a fee.

Pick Falls Apart - Similar to the event above, this does not happen with any visual event. Simply pick up or pickaxe head, then in your inventory click to reattach it.

Rock Golem-Will keep attacking, to escape run out of the line of sight (so you cant see them).

Levels:
Rock Golem (Level 156) - High Level Players
Rock Golem (Level 120) - Medium Level Players (ex. 67)
Rock Golem (Level 79) - Low Level Players
Rock Golem (Level 49) - Very Low Level Players