MW4 DMZ yellow cabinets and Irradiated Containers
Find Chemical Storage cabinets, recognise the sealed Ultra item, and follow a filmed route to the Reactor 02 processing machine.
Search yellow Chemical Storage cabinets for a chance to find a sealed Irradiated Container. If you extract with one, take it back into Hājīn and process it at Reactor 02. The yellow cabinet is the searchable fixture. The Irradiated Container is the Ultra item that goes in your backpack.
Where to search for yellow cabinets
Look for a yellow cabinet with the Chemical Storage prompt. Start with clinics or fire-station storage rooms on a route you can extract from. These buildings are search leads. Their names and colours alone give no assurance of an accessible cabinet or a particular item.
- Deadtown. In one filmed solo run, the creator found the sealed item in a yellow cabinet in the locker room. Use the Deadtown area reference and match the room in the footage.
- Chang-san Air Base and the reactor complex. Published routes also identify Chemical Storage around these sites. Look for the cabinet prompt in your match and plan for the reactor’s radiation.
- X01 Deep Vault. A Season 1 player report records a find in a footlocker. Treat this as a single observation. The B0 elevator guide covers how to enter X01.
Where and how to process it
Equip radiation gear and a gas mask. Check your protection before entry, bring the sealed item in your loadout and choose an extraction point with a fallback. Activision describes severe radiation around the complex, with higher exposure inside.
- Use the Haneul Reactor area reference. Find the exterior ladder beside the big pipe and the blue cabinet marked 03.
- Take the rooftop zipline to the breach in Reactor 02. Descend onto the yellow beam and look for the interior door toward the northwest from that approach.
- Pass through the door and turn right to the machine marked HNR and the radiation symbol. Use Process Radioactive Material.
- Wait for processing, open the container and take the loot yourself. Check remaining protection and extract.
See the cabinet 03 landmark and the processing screen ↗. Fallen Ember’s fuel rods and the underwater DRC Locker are separate objectives.
Loot and FOB decisions
One documented opening showed an APOC-338. Players have also reported Weapon Manuals, keys and valuables from other openings. These examples establish possible outcomes. The available footage and small samples leave Season 1 drop rates, fixed cabinet spawns, guaranteed rewards and processing times unconfirmed.
If a Manual appears, use the Gunsmith and Weapon Manuals guide to check its extraction unlock. If you find crafting materials, compare them with your tracked recipe and stash reserves. Carrying a sealed container is a choice to make a reactor run. It has no verified reserve target in the tracked FOB recipes.
