The Blast Furnace is only accessible to RuneScape Members. Please subscribe to get this feature.

Please note this is a ‘Safe’ minigame. There is nothing to kill you here, unless you are poisoned.

The Blast Furnace in Keldagrim is the most efficient ore-processing machine in RuneScape, but it requires a lot of attention. Here players can either work on their own (very time consuming!) or together to power a large furnace, which when working, will require half the amount of coal for refining. The Blast Furnace Foreman will direct you on what to do.

The Blast Furnace is located in the Eastern area of Keldagrim - the underground dwarven city uncovered during The Giant Dwarf quest. It is marked with the mini game icon on your mini map and is situated underneath the factory.

One of the ways to travel there is via the Mine Carts in the Dwarven Mines for 150 gold pieces per ticket.

You will need to have started The Giant Dwarf quest to gain access to the Dwarven city of Keldagrim.

The following roles will need to be filled in order to power the furnace, a group of at least five players is recommended. It is also a good idea to swap roles from time to time so that everybody can gain experience from the different skills.

Someone with level 30 Firemaking to keep the stove lit. This person will need to use their spade with the coke holder and then click on the ‘Refuel Stove’ button.

Someone with level 30 Strength to pump the superheated air between the stove and the furnace. Good communication is needed here as this person must take instruction from the temperature gauge reader as if the furnace overheats the person pumping the air will take damage. A small amount of food is recommended for the person fulfilling this role

Someone with level 30 Agility to work the pedal-powered conveyor belt that puts ore into the furnace. The person performing this role may wish to take some energy restore potions as their energy will slowly drain to nothing.

Someone with level 30 Crafting to keep the furnace in working order. This person will need a hammer so that they can fix all broken parts such as pipes and the conveyor belt.

Someone to watch the temperature gauge and tell the person who is pumping to start and stop, so that the furnace does not overheat. There is no skill requirement for this role. The white part of the gauge means that the furnace is too cold and needs more pumping. The green means the temperature is just right; the red means that the furnace is too hot.

The temperature gauge will also alert the gauge reader to when the furnace has a broken part.

While the furnace is in use, all the workers will gain experience in their respective skills (such as agility experience whilst powering the conveyor belt) as well as Smithing.

This furnace is the most efficient ore-processing machine in RuneScape, but it requires a lot of attention and hard work in order for it to refine the ores. Recommended items to take are:

• Food - Only a small amount is needed for the less confident player, used incase of damage from the furnace air pump.
• Hammer - Spawns at the back of the room.
• Spade - Spawns by the coke bin.
• Bucket - Spawns next to the sink.
• Gold Pieces - For use of the anvils and to buy back noted ores.
• Ores - Noted, if you are planning on selling and buying back from the ore shop. Please be aware that other players may also be using this method so there is a risk that another player may purchase your ores.
• Pickaxe - If you wish to mine your own ores in a nearby location

There are two dwarf traders that can be found near the furnace. They are:

Ordan the ore salesman - sells every ore up to Mithril.

Jorzik the armour salesman - sells all types of armour from Mithril up to Rune. However, these items are only supplied by players.

While the furnace is working anyone can put ore onto the conveyor belt and retrieve bars from the bar dispenser. However, for players under level 60 Smithing, there is a 2500 coin fee. This fee is justified due to the furnace being so efficient, purifying ore takes only half as much coal as with a regular furnace, for example, steel bars would require 1 iron and 1 coal. This greatly reduces the amount of coal that needs to be gathered by Smelters and Smiths.

After you have put your ore onto the conveyor belt you will see them move along it until they drop into the furnace. Don’t worry, you will not lose your ore if you log out, and other players cannot pick it up.

After a while you will see the bar mould on the bar dispenser fill up and glow orange. To cool down your bars, use a bucket of water on them.

If you wish to smith your bars here then you can use the anvils in the fenced area, which are located north west of the furnace. Entry to this area requires level 60 Smithing or higher.