I have tested bits and pieces regarding mining on UOF and I spread some of that information trough forum posts or chat but I want to compile it into a single place. I'll update this post over time and maybe one day convert it into a full mining guide. Feel free to give feedback or throws in your own inputs in the replies. Mining grid Ever noticed if you mine out a tile, that the tile next to it is also empty and sometimes it isn't? That's because the map is devided into a grid that consists of 4x4 tiles. All the tiles with that 4x4 range are bound together into a single resournce node. Meaning if you mine out one tile, the other tiles will also be empty. Each resource node has it's own ore color, ore amount and respawn timer. Example: Ore color: Some resource nodes have colored ore. These colors are fixed and will never change, so if you find a valorite node and come back later to mine it again, it will still give valorite. If you mine a node which has a colored ore, there is a 50% chance to get that colored ore, otherwise it will be iron ore. If you don't have sufficient mining skill, it only yield iron ore. Ore amount: TODO - I noticed a node is exhausted after 5 to 16 mining cycles (it varries). This amount of mining cycles appears it be a fixed per mining node. Over the years, I noticed these amounts randomly changed. Not sure what triggered it. I'm guessing a server reboot, server upgrade or map update. Respawn timer: TODO - I had mixed results varying between 22 and 32 minutes. Needs more testing in regards to boundy values and exact behaviour. Melting iron - double melting chance When melting iron, there is a chance to have doubled results. I'm not sure if there is minimal mining skill required but at 100.0 skill and above the following formula applies: melted ingots = iron ore * (1 + (Mining skill / 200)) Mining gloves are taken into account! Test results can be found in reply below. Bountiful Harvest Bountiful harvest is one of many consumable perks that give your character a temporary boost. This particalur one will increase your mining yields (see Mining cycles and yield) for a limited time duration. The timer starts as soon as you activate the item in your backpack and can not be stopped (continues when outside backpack or when you log off). Once the timer runs out, it disappears. During activation, the item is blessed. These consumable perks can be obtained through: Participating in Champion Spawns (distributed like a powerscroll at the end). Loot inside a paragon metal chest. The bountiful harvest perk does not stack, so don't activate multiple of these perks at once. Mining cycles and yield Every node supports a fixed number of mining cycles (not an amount of ore) before it get's exhaused. The amount of ore you get per mining cycle will vary: You will always get 1 ore/granite per cycle by default. Mining on the felucca facet (overland and original dungeons) will give an additional +1 ore/granite per cycle. RDA's and customized dungeons are located other facets and will not give you this bonus. Mining with a bountiful harvest perk will give an additonal +1 ore/granite per cycle. Mining after using a recall spell, you are limited to 1 ore/granite per cycle for 3 minutes. Note that this penalty can be avoided by using a gate spell. An example with ore yields per cycle: A mining node inside a cave nearby Britain is known to support 7 mining cycles before it's empty. You will get 2 ore per cycle due to the felucca facet bonus for a total of 14 ore. If you recalled recently, you will only get 7 ore before the node is exhausted. When you have mining for granite enabled: You have a 10% chance to get granite instead of ore. The amount you dig up per cycle follows the same rules as with ore. When you dig up granite, you will NOT exhaust the node. An example with ore/granite yields per cycle: A mining node inside a cave nearby Britain is known to support 7 mining cycles before it's empty. You will get 2 ore per cycle due to the felucca facet bonus and happen to strike granite twice, for a total of 14 ore and 4 granite. If you recalled recently, you will only get 7 ore and 2 granite before the node is exhausted. Recommended prices I often get people asking for advise when it comes to selling their goods. Some people use Blaine the Gypsy's Guide: Resource/Mod Default Prices which is an excellent overall resource guide which I often consult myself. Based on my own findings, I'd say the prices aren't as linear and would recommend these price ranges instead: Iron 8-10 gp Dull Copper 12-15 gp Shadow Iron 28-33 gp Copper 30-35 gp Bronze 33-38 gp Gold 41-45 gp Agapite 45-50 gp Verite 53-60 gp Valorite 55-62 gp Taken all factors into account, a bountiful harvest perk adds around 325 gp / minute for an average miner. Updated September 2018 Miner related changes Febuary 2018 (http://discord.uoforever.com #Patch-notes) Recall harvesting cooldown implemented. You no longer get the felucca double mining bonus after using 'recall' for 3 minutes. January 2018 Weapon slayer deeds have been added to the game. Which affect the demand for colored ores since the required materials are a mix of all available colored ores. This also implies that iron will be in lesser demand. Mining no longer causes to spawn mobs, Eppy stated it missed the intend to stop afk mining. (undocumented) December 2017 (no patch notes available) Pets with less than 200 hitpoints do not suffer from skill loss, so pack horses and llama's are no longer affected by skill loss when resurrecting them. Giant beetles have exactly 200 hitpoints so they will still be affected (undocumented) November 2017 Mining spawns Earth elementals again instead of Trolls. Basicly reversing the changes from last month. October 2017 Mining spawns trolls now instead of earth elementals which is monster of the month for October. Miners are not allowed to have nice things (Undocumented). September 2017 Allow mining of crystal fragments: All Mineable crystal are now always spawning in reachable locations. May 2017 Blocked cave house mining: You are no longer able to mine inside the cave houses. April 2017 All swampy barding deeds now have the same damage reduction: Previously the damage reduction increased with ore color. Meaning valorite will be in a lesser demand now. March 2017 Mining now gives a chance to spawn mobs that drop nice stuff: Earth elementals will spawn during mining activities; see section about Earth Elementals above. February 2017 Added consumable perks and drop rate: Bountiful Harvest was introduced as a perk, which is a replacement for the old faction bonus; see section about Bountiful Harvest above. November 2016 Made granite stackable: Granite block can now be stacked. Previous each granit block was a seperate item.