The following reveals the items found in each of the emergency boxes in the game, so you won’t ever waste a plug on an E-Box that doesn’t have what you need.
Yellow E-Boxes (Med. supplies & ammo)
Strategy Room:
Med Pack M 1
Hemostat 1
Intensifier 1
Slag Bullets 5
Resuscitation 1
Control Room B3:
Hemostat 2
An. Aid 2
Multiplier 1
Resuscitation 1
Hovercraft:
Slag Bullets 10
Recovery Aid 1
Underground Heliport:
Med. Pack M 2
An. Aid 1
Recovery Aid 1
Resuscitation 1
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