Hazard Storehouse is a Rare key in MW4 DMZ. It opens the material storage warehouse at Haneul Nuclear Reactor, a shed south of the cooling towers that sits inside the radiation zone. Below is where the door is, the short walk to it and everything we found in its 19 containers.
- The door is at Haneul Nuclear Reactor, grid I5, on the east side of a white shed with a Storage sign, south of the cooling towers.
- The shed is inside the radiation zone, so bring a gas mask or a hazmat suit. The reactor was a High threat area in our run.
- Behind the door is one warehouse hall with 19 containers, including two chemical storage cabinets.
- Ours held an Epic Medkit and two intel items, at least $7,250 in loot, and no hazmat suits.
- Kind of not worth it. It is hard to reach in the radiation and the loot is not that good.
Where the Hazard Storehouse Door Is
The Hazard Storehouse is at Haneul Nuclear Reactor, grid I5, south of the cooling towers. It is a long white shed with corrugated walls and a Storage sign next to the door, which is why the key tooltip calls it the material storage warehouse. The door is a plain blue one on the east side, facing a parking bay with yellow markings on the ground. The whole area is inside the radiation zone and was a High threat area in our run. You can also find the door under the keys layer on our interactive MW4 DMZ map.
Click to enlarge The shed with the Storage sign, seen from the parking bay. 
Click to enlarge The blue door with the unlock prompt. 
How to Get the Hazard Storehouse Key
The Hazard Storehouse key is field loot, so it can drop from ordinary containers on Hajin. We once found one in a military locker inside the Field Depot at Chang-san Air Base. Keys roll randomly, so treat that as one place it turned up, not a fixed spawn. Every other key and the door it opens is in our MW4 DMZ keys guide.
The Route to the Door
The walk itself is short. The hard part is getting into the radiation zone at the reactor in the first place, so put on a gas mask or a hazmat suit before you go in and keep an eye on the radiation countdown.
- Head into the reactor grounds and follow the road south of the cooling towers.
- Look for the long white shed with corrugated walls. The Storage sign and the blue door are on the side facing the parking bay.
- Walk across the yellow markings of the parking bay to the blue door and use the key.
What Is Inside the Hazard Storehouse
The door opens into one large warehouse hall with shelves, pallets and stacked crates, plus a small side room with metal shelves. All 19 containers are inside that hall, so you can loot everything without stepping back out into the fog. The first chemical storage cabinet stands right next to the door.
Click to enlarge The warehouse hall, brightened. 
Containers
- 5× Industrial Locker
- 5× Military Locker
- 2× Chemical Storage
- 2× Footlocker
- 2× Tool Box
- 1× Ammo Box
- 1× Duffel
- 1× Equipment Case
The containers decide the loot. Tap one to see what it can drop in our loot data.
Loot
-
Medkit Epic $1,000 Military Locker -
2-Plate Armor Vest Rare $1,000 Footlocker -
Ballistic Flight Logs Uncommon $1,000 Military Locker -
Regional Combat Notes Uncommon $1,000 Footlocker -
Binding Catalyst ×2 Rare $500 each Chemical Storage -
Biomaterials ×2 Uncommon $200 each Chemical Storage -
Detonators ×3 Uncommon $200 each Chemical Storage, Industrial Locker -
Reactive Metals ×2 Uncommon $200 each Military Locker, Chemical Storage -
Bandage ×2 Uncommon $100 each Chemical Storage -
Pain Killers Uncommon $100 Chemical Storage -
Stim ×2 Uncommon $100 each Footlocker, Equipment Case -
Throwing Knife Uncommon $100 Military Locker -
C4 Common $50 Loose in the room -
Concussion Grenade Common $50 Military Locker -
Screamer Mine ×3 Common $50 each Military Locker, Equipment Case, Loose in the room -
Radiation Blockers Rare Military Locker -
Ammo Pack Common Ammo Box -
Armor Plate ×7 Common Footlocker, Military Locker -
Chemicals ×32 Chemical Storage, Industrial Locker -
Electronics ×6 Footlocker, Duffel -
Metals ×37 Industrial Locker, Tool Box -
Synthetics ×11 Chemical Storage, Industrial Locker
From one opening in our own run. Loot is random, so your room can roll differently, and we add every new run of this key. Values are per item, from the in-game tooltips. The loot value adds up every item with a known value and the cash, so it is a lower bound: crafting resources and items without a value are not in it.
Most of it is resources and basic gear. The five grey industrial lockers along the walls held only metals, synthetics, chemicals and a set of detonators, and the tool boxes and the duffel were resources too. The two yellow chemical storage cabinets gave the most items, a pair of Binding Catalysts, biomaterials, reactive metals, detonators and a stack of chemicals. The military lockers had armor plates, an Epic Medkit worth $1,000, Radiation Blockers and Ballistic Flight Logs. A footlocker held Regional Combat Notes and the other one a 2-Plate Armor Vest. A Screamer Mine and a C4 lay loose in the hall. Counting only items with a known value, the loot in the room was worth at least $7,250. There were no hazmat suits.
Click to enlarge The second chemical storage cabinet, brightened. 
Is the Hazard Storehouse Key Worth It?
Kind of not worth it. The shed sits in the radiation zone, so it is hard to get to, and the loot is not really that good. The two chemical storage cabinets are kind of nice, but other than that there is not much here.
It also does not give you hazmat suits, even though it sits right in the radiation. If that is what you are after, the Reactor 02 Control Room is the better key. In our run its control room had three Legendary Hazmat Suits.
Frequently Asked Questions
Where is the Hazard Storehouse in MW4 DMZ?
At Haneul Nuclear Reactor, grid I5, south of the cooling towers and inside the radiation zone. It is a white corrugated shed with a Storage sign on the wall. The blue door is on the east side, facing a parking bay with yellow markings.
Where do you get the Hazard Storehouse key?
It is field loot, so it can drop from ordinary containers on Hajin. We once found one in a military locker in the Field Depot at Chang-san Air Base, but keys roll randomly, so that is not a fixed spawn.
What is inside the Hazard Storehouse?
We counted 19 containers in one warehouse hall, two chemical storage cabinets, five industrial lockers, five military lockers, two footlockers, two tool boxes, an equipment case, an ammo box and a duffel. Ours held an Epic Medkit, Regional Combat Notes, Ballistic Flight Logs and a lot of resources, with the loot worth at least $7,250. There were no hazmat suits.
Is the Hazard Storehouse key worth it?
Kind of not worth it. The shed is in the radiation zone, so it is hard to get to, and the loot is not that good. It has two chemical storage cabinets, which is kind of nice, but it gives no hazmat suits. For those, the Reactor 02 Control Room had three Legendary Hazmat Suits in our run.
