Locations of weapon crates in Headstone Mine.
Location 1 (White Chest)
Inside a side building where the first large group of bandits are fought.
Location 2 (White Chest)
After the first group of bandits, take the stairs up and go left. Inside the building there is another white chest.
Location 3 (Red Chest)
If the main staircase was used, after getting through a small group of bandits, another building must be passed through. Inside is a red chest.
Location 4 (White Chest)
In the second large group of bandits, go down the staircases from where the first red chest was. A building similar to where the first white chest was found is there. When you approach the building, the door will open and a bandit will pop out. Inside the building will be another white chest.
Location 5 (Red Chest)
After passing the MK2 turret, turn left to face a small group of bandits. Inside a building to the right will be a red chest.
Location 6 (Red Chest)
On the way to Sledge, there will be a red chest next to the lift. This chest cannot be missed.
Location 7 (Red Chest)
This red chest is on top of the second building, which can be accessed through a grenade jump or by jumping on a scrap metal roof on the other side, then crouching to avoid falling onto the ground. Follow the path and a red chest should appear. This red chest has a greater chance of containing higher-levelled weapons can contain the occasional class mod.