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Use the Hoesik Supply Room Key at the Rice Mill in southeastern Imjin Farmland on the Hajin map, grid D8. The correct door is not in the main mill production building: enter the southern office or two-story building, go upstairs from the ground-level entrance, and unlock the Hoesik Supply Room. Floor labels vary between guides, but the building and upstairs route are consistent.
Where do I use the Hoesik Supply Room Key in MW4 DMZ?
The key opens a room inside the Rice Mill Stronghold in southeastern Imjin Farmland, at grid D8 on Hajin. Treat the southern office/two-story structure as your landmark. Searching the large industrial mill building can waste time because the Hoesik door is in the separate southern building.
- Travel to the Rice Mill in southeastern Imjin Farmland.
- Identify the southernmost office or two-story building rather than the main production hall.
- Enter through the ground-level entrance.
- Climb the interior stairs.
- Interact with the locked Hoesik Supply Room door upstairs and use the key.
Some guides call the destination the first floor, while others call it the second floor. Follow the upstairs route and the building layout instead of relying on the floor number shown in a guide or map label.
What building contains the Hoesik Supply Room?
The room is in the southern office/two-story building at the Rice Mill. It is separate from the main mill production building, so use the southern structure’s exterior and its stairwell as your navigation cues.
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How to recognize the correct entrance
- Stay on the southern side of the Rice Mill complex.
- Look for the smaller office-style or two-story building.
- Enter at ground level and find the stairs immediately inside the structure.
- Check the upstairs locked door for the Hoesik Supply Room interaction.
How do I get the Hoesik Supply Room Key?
The Hoesik Supply Room Key is classified as Epic by Dexerto and comes from random loot. Prima reports no guaranteed acquisition method, so there is no confirmed mission, vendor, or fixed container that reliably awards it every run.
Because the drop is not guaranteed, keep the key in a Secure Slot when possible. Activision’s DMZ guidance explains that items outside a Secure Slot can be lost when an extraction attempt fails. Securing the key before deploying gives you a better chance of carrying it into a later run instead of having to search for another random drop.
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What loot is in the Hoesik Supply Room?
Loot rolls separately each match, so opening the room does not guarantee a particular weapon, document, material, or cash amount. Guides report several container types and possible high-rarity contents rather than a fixed reward table.
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| Reported contents | What to expect |
|---|---|
| Weapons locker | A possible weapon-container roll; the exact weapon is not guaranteed. |
| Safe | A possible safe with match-dependent contents. |
| Cache | An additional reported container that can roll different items. |
| Epic materials and cash | Possible valuable materials or money, with no published fixed amount. |
| Weapons or documents | Possible drops vary by match. DMZMap gives Signal 50, Infantry Invasion Plans, and Oris 8.6 as examples from one match, not guaranteed rewards. |
No reliable published percentage establishes the key’s drop rate, the room’s loot odds, or an expected value per opening. Plan around the room’s possible value rather than treating any listed item as a promise.
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Is the Rice Mill safe to visit?
No. Prima describes the Rice Mill as a Stronghold with soldiers, aerial drones, and possible nearby roaming-boss activity. Clear the approach before stopping to search containers, and avoid opening the door while exposed to the compound’s sightlines.
Risk-management checklist
- Approach with enough armor, ammunition, and healing items for a Stronghold fight.
- Watch the sky and surrounding routes for aerial-drone pressure.
- Expect nearby activity to change between matches, including possible roaming-boss presence.
- After looting, leave with an extraction plan rather than assuming the area will remain quiet.
DMZ is an extraction mode in which players loot, complete objectives, fight AI and rival Operators, and attempt to extract rewards. The available guides do not quantify the exact player-versus-player danger around this Rice Mill, so the practical threat level can vary from deployment to deployment.
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Should I make a detour for the Hoesik room?
Make the trip when you already have the key, can handle Stronghold resistance, and have a reasonable extraction route. The room can contain several valuable containers, but randomized loot means the result may not justify a long cross-map trip through an active compound.
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- The key is already secured in your inventory.
- Your squad has the equipment to clear soldiers and respond to drones.
- You are near southeastern Imjin Farmland or have another objective in the area.
- You can extract without carrying more risk than the possible loot warrants.
Skip or postpone when
- You are under-equipped for a Stronghold.
- The key is unsecured and losing it would be costly after a failed extraction.
- Nearby boss or Operator activity makes the approach disproportionally dangerous.
- You are too far away to reach an extraction point safely after looting.
What should I do if I cannot find the door?
Return to the southern office/two-story building and verify that you entered at ground level. The Hoesik door is upstairs; searching the main production building or relying on a disputed first-floor/second-floor label can send you to the wrong structure. If the lock does not offer an interaction, confirm that the Hoesik Supply Room Key is present in your active inventory or Secure Slot before leaving the stairwell.
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Frequently Asked Questions
What is DMZ in Call of Duty?
Call of Duty describes DMZ as an extraction-shooter experience built around entering an open world, gathering loot, completing objectives, fighting AI and other Operators, and extracting with rewards. That structure is why carrying a key safely to the Rice Mill matters as much as finding the room.
Does the Hoesik key carry over if I fail to extract?
Only items kept in a Secure Slot are protected under Activision’s DMZ guidance. An unsuccessful exfil can remove items carried outside that protected slot, so an unsecured Hoesik key may be lost.
Why do guides disagree about the room’s floor?
The disagreement is a labeling difference between guides, not a different destination. The consistent directions are the southern Rice Mill office/two-story building, a ground-level entry, and stairs leading to the locked room.
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