Since there are mine-fields, I thought a neat thing would be a metal detector. I don’t know what stats/skills it would use, but as long as it has power it can detect any metallic objects in soil. As far as tiers
1.) Military mine detector: a simple but effective tool designed to locate metal objects. Has an option to audibly chirp or have a display light up upon detecting an object. uses UPS.
2.) Civilian Metal Detector: A very basic kit that pings when it detects metal within a short range underground. Not reliable or particularly robust. Comes in two variants: A small pocket detector that chirps and has a poor battery life. A second variant is larger, with a cumbersome battery, and still chirps in much the same way.
3.) Rivtech Detector: A very rare, experimental detector. Is able to pick up objects and has a display to list depth and size. Has electronics built that can be set to locate specific, preset other objects (perhaps radioactive, goo, or something like that). Uses UPS.
At default, it could aid in looking for mines, but perhaps it can be used to examine tiles to see if there is metal on/in that tile.