Thorium

Purple Gold
"Introducing Thorium: a new ultra-rare resource to help you dominate the World Map. Thorium is harvested from special deposits and is required to research and upgrade advanced units and structures. Thorium Deposits are limited and don't respond immediately, so capture them quickly and hold them until all the Thorium is drained!"

About Thorium
Thorium is an extremely rare resource that is needed to upgrade your Defense Platform to level 4, your walls to level 5 and above, to get troops to level 10, and for the gambling man to reroll your rewards from Rouge Faction Bases for better rewards. Unlike the other 2 resources Oil and Metal, it cannot be harvested from pumps or factorys, you need to go out into the world map and find a Thorium Depo of your choice. Medium, Large, and Giant, they only come around every 4-5 days and last for 1-2 days depending on the depo. And unlike other depos there isn't an infinite amount of resources, it will tell you how much thorium is left in a bar and when it is all drained the thorium depo will disapeer from the map. Usually the defenses inside of a thorium depo are extremly hard to get past if not impossible, thorium is best left for the higher levels since the lower levels don't anything for thorium anyways.

Thorium in real life
Thorium is a naturally occurring radioactive chemical element with the symbol Th and atomic number 90. It was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and identified by the Swedish chemist Jöns Jakob Berzelius and named after Thor, the Norse god of thunder.

Thorium produces a radioactive gas, radon-220, as one of its decay products. Secondary decay products of thorium include radium and actinium. In nature, virtually all thorium is found as thorium-232, which undergoes alpha decay with a half-life of about 14.05 billion years. Other isotopes of thorium are short-lived intermediates in the decay chains of higher elements, and only found in trace amounts. Thorium is estimated to be about three to four times more abundant than uranium in the Earth's crust, and is chiefly refined from monazite sands as a by-product of extracting rare earth metals.

Thorium was once commonly used as the light source in gas mantles and as an alloying material, but these applications have declined due to concerns about its radioactivity. Thorium is also used as an alloying element in nonconsumable TIG welding electrodes.

Canada, China, Germany, India, the Netherlands, the United Kingdom and the United States have experimented with using thorium as a substitute nuclear fuel in nuclear reactors.[2] When compared to uranium, there is a growing interest in developing a thorium fuel cycle due to its greater safety benefits, absence of non-fertile isotopes and its higher occurrence and availability.[2] India's three stage nuclear power programme is possibly the most well known and well funded of such efforts.[3] [4]

-Wikipedia

Thorium Fun Facts
1. Once you capture a thorium depo the depo has a 30 minute damage protection bubble since everyone will be wanting your newly captured thorium depo.

2. Thorium in real life changes role from first Uranium to Thorium Uranium to Thorium over and over again until finally it turns into...lead this takes around 100 million to 1 billion years.

3. Thorium is a radioactive/radioactive decaying material, which means it releases energy particales that can be used in powerplants in real life. But it could take a roll as a better version of energy to use in powerplants which could replace overdrive.

4. If you have troops in your Thorium depo when it disapeers from the world map they will all be returned to your base.

5. The average Thorium mining ratio is 10-30,000 per hour.

6. That guy from Operation Hellfire owns all the Thorium.