The Plain mining urn (full) is an item made by filling a plain mining urn while mining rocks. It can be teleported to Ernie by clicking it, giving 325 Mining experience. Players can have up to ten full urns of any type at any one time. Once that number is reached, new urns will not start collecting charges. A full urn can also be given to Ernie manually by using the item on him, or through a chat option while having a full urn in the inventory. Full urns can also be teleported automatically by toggling the "Auto-teleport current skilling urn and accumulators when full" option on under inventory options in general gameplay settings.
Players can also use an urn enhancer unlocked at level 24 Invention to get 25% more experience.