Mill Explosives Lab Key Location in MW4 DMZ
The Mill Explosives Lab Key opens the explosives lab in the Rice Mill. Its locked room is at Imjin Farmland.How to get the key
Last updated Game version: Launch (October 23, 2026)
Quick answer
- Where
- Imjin Farmland
- The door
- The explosives lab in the Rice Mill.
- What is inside
- Not confirmed yet. Loot changes every match.
- Getting the key
- Not confirmed yet; keys turn up as loot.
- Threat there
- Medium at Imjin Farmland
Where the Mill Explosives Lab is
| Location | Imjin Farmland |
| Rarity | Uncommon |
| Highest threat at Imjin Farmland | Medium |
See Imjin Farmland on the interactive Hajin map, and the threat level by area in our Imjin Farmland location guide.
What the Mill Explosives Lab Key opens
The explosives lab in the Rice Mill. The key card is Uncommon.
How to get the Mill Explosives Lab Key
Where this key drops is not confirmed yet. Keys turn up as loot, a Lieutenant you kill may drop the key to their own loot room, and some Story Missions pay keys as rewards.
Keys can go in your Stash between deployments, but anything outside a Secure Slot is lost if your exfil fails. Tick the keys you have in the MW4 DMZ key finder; the list stays in your browser.
Other keys at Imjin Farmland
- Imjin Mill Foreman's Office (grid D8): The foreman's office on the first floor of the rice mill.
- Hoesik Supply Room: A supply room at the Rice Mill.
Questions
Where is the Mill Explosives Lab Key used in MW4 DMZ?
At Imjin Farmland. It opens the explosives lab in the Rice Mill.
What rarity is the Mill Explosives Lab Key?
Uncommon, as its key card shows.
Every confirmed MW4 DMZ key with its own page
- Counting Room Vault
- Mirae Electrical Room
- Shop Records Room
- Gun Store Weapons Locker Key
- Shopping DRC Locker
- Reactor DRC Locker
- Coin Mining Den
- Supreme Leader's Bunker Access Card
- Roze's Highrise Armory
- Vault Armory
- The Citadel South Wing
- Old Barber Shop
- Rail Depot Storage
- Militia Arms Depot
- Haksan School Armory
- Re-Education Center Annex
- Imjin Mill Foreman's Office
- Hoesik Supply Room
- Air Base DRC Weapons Locker
- Iskra's Control Room
- Netshin IT Room
- Police Weapon Depository
- The Chemist's Secure Armory
- Gangbyeon Apartment B
- Airbase Armory Keycard - Single Use
- Hanex Guard Station
- Lucera Suite 703 Bedroom
- Reactor 02 Control Room
- Utility Maintenance Storage
- Weapons Mod Workshop
- Executive Arms Auction
- Hazard Storehouse
- Police Station Armory
- Mechanic's Shack
- Air Base Access Card - Multi Use
- Commandant Office
- Gas Station Electrical Room
- Jang-ui's Converted Power Room
- Jin-Tae's Private Lounge
- Mill Explosives Lab
- Prison Encampment Storage
- Underground Propaganda Store Room
- The Doctor's Command Office
- South Block Armory
- The Citadel Main Control Room
- The Citadel Secondary Control Room
- Field Depot - B5
- Fire Station Storage
- Gangbyeon Apartment A
- Haejeok Radio Station
- Hanwoori Art Records Room
- Hotel Lucera Lobby
- Kang's Arms Incinerator
Official sources
Continue reading
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