Mineshaft (Isengard)

* Level 1
* Level 2
* Level 3

* Level 1
* Level 2
* Level 3

"The plain, too, was bored and delved. Shafts were driven deep into the ground; their upper ends were covered by low mounds and domes of stone, so that in the moonlight the Ring of Isengard looked like a graveyard of unquiet dead. For the ground trembled."
—The Two Towers

The **Mineshaft** is a resource building of Isengard which can be built at a main base/outpost and settlements. Unlike Dwarven Mineshafts, the Isengard Mineshafts are not able to be garrisoned with units to transport them across the map.

## Level Up

 **Worker's Tools**: Upgrades the building to rank 2. At rank 2, **economy buildings** produce 25% more resources and gain 500 additional hit points.
 **Settler's Tools**: Upgrades the building to rank 2. At rank 2, **economy buildings** produce 25% more resources, gain 500 additional hit points and cost 300.

 **Forged Worker's Tools**: Upgrades the building to rank 3. At rank 3, **internal economy buildings** produce 20% more resources and gain 1000 additional hit points.
 **Forged Settler's Tools**: Upgrades the building to rank 3. At rank 3, **external economy buildings** produce 20% more resources, gain 500 additional hit points, can temporarily man a defensive tower and cost 400.

**The upgrades can be researched from the Armory**

## Abilities

**Resource Production** - This building produces resources. It produces **28**  every **12** seconds by default. This number can be modified through upgrades and abilities.

 **Supply Routes** - As you build more economy structures, their individual production becomes less efficient. Once you reach a certain threshold all economy structures will produce less.

* **5** economy structures or less: **100%** production
* **10** economy structures: **84%** production
* **15** economy structures: **69%** production
* **20** economy structures: **56%** production
* **30** economy structures: **49**% production
* **37** economy structures or more: **44%** production

**Rare Ore** - The Mineshaft is a basic resource building. It also provides a reduction to the cost of heavy Uruk-hai up to -30%:

* 2 Mineshafts: -10%
* 3 Mineshafts: -15%
* 4 Mineshafts: -20%
* 5 Mineshafts: -25%
* 6 or more Mineshafts: -30%

On external plots, Mineshafts also have access to:

 **Level 3: Man the Defenses** - The workers take up arms. For 20 seconds, the building shoots at nearby enemies but doesn't produce resources.

## Strategy

The Mineshafts of Isengard are one of the two main resource buildings available at the castle. It is also available at the settlements. Like the Furnace, the Mineshafts give a large economy bonus in the form of a discount for Heavy Uruks. These include the basic Tier 2 Uruks, as well as Berserkers, Mine Berserkers, and Shield Uruks. This improves Isengard's already strong economy, allowing you to save money on units in the mid-late game and use it on siege, heroes or upgrades. Thanks to it's availability on the settlements, it can be easier to get the Mineshaft discount than the Furnace discount. Therefore, a potential strategy would be to use Mineshafts on the settlements and the Furnaces in the base to get the benefit of both discounts.