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DMZ CODEX · HAJIN EXCLUSION ZONE UPDATED 2 NOV 2026

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Rice Mill complex in Imjin Farmland
Guide · Bosses & PvP

Mill Explosives Lab key: roof and window pickup route

Rice Mill upper control room · Reported approach: exterior pipe, roof, window · Key pickup is separate from lab access

In short

The Mill Explosives Lab key has been observed on a desk in an upper Rice Mill control room. The practical pickup route uses an exterior pipe and a broken window. Collecting this key does not establish where the lab entrance is; no verified lab-opening sequence is available for this guide.

  • Rice Mill upper control room
  • Reported approach: exterior pipe, roof, window
  • Key pickup is separate from lab access

The Mill Explosives Lab key has been observed on a desk in an upper Rice Mill control room. The practical pickup route uses an exterior pipe and a broken window. Collecting this key does not establish where the lab entrance is; no verified lab-opening sequence is available for this guide.

Reach the upper control room

  1. Travel to Rice Mill in Imjin Farmland. Identify the main mill building before searching the smaller offices outside it.
  2. Find the exterior pipe used to climb onto the roof. Check the approach for enemies before committing to the climb.
  3. From the roof edge, locate the upper control-room windows. Break the relevant window and line up the jump into the room.
  4. Sprint and jump through the opening. The reported route enters through the window because the room’s normal door is locked.
  5. Search the table beside the radio and read the item name: Mill Explosives Lab. Take the key if it has spawned and is still present.

Recognise the pickup

Mill Explosives Lab key observed on the control-room desk
Mill Explosives Lab key observed on the control-room desk

This image documents a key pickup, not the door it opens. A successful find in one deployment does not guarantee it will still be on the table in yours. If it is missing, do not spend the entire radiation timer repeating the same room search.

What to do with the key

Keep it for a later access attempt, using a Secure Slot when available. The Mill Explosives Lab record is the place to check for a confirmed destination as evidence improves.

An underwater route beneath the mill is circulating, but the available reports conflict and do not establish a matching named lab door and successful unlock. Do not dive into a flooded passage on the assumption that this key opens it.

Other mill locks are separate

Rice Mill Bunker, the Foreman’s Office, Gorani’s Scout Overlook and Hoesik Supply Room are different destinations. Finding one of those locks does not solve the lab entrance. Match the complete lock name before using any key.

If your aim is a room you can open now, the Hoesik guide provides a separate upstairs-office route. Use the keys guide to choose your next run.

Quick questions

Is the key guaranteed on the desk?

A pickup has been observed there, but this guide does not establish a guaranteed spawn for every deployment.

Does the roof route enter the Explosives Lab?

No. It reaches the room where the key has been found. The lab door itself remains unresolved.

Mentioned in this guide

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