This is the place where the majority of the warbird (aircraft that have survived military service) discussions will take place. Specialized forums may be added in the new future
Fri Mar 13, 2020 3:16 pm
How do you ensure an airfield has no loose shrapnel fragments lying around? 121st Naval Construction Battalion use a magnet truck to clear an airfield of shrapnel for 'rehabilitation operations', 29 July 1944. (Seabee Museum photo)

Looks electromagnets with cables running to a power source and control panel in the back of the truck.
Fri Mar 13, 2020 7:06 pm
Several of the tugs at the FBO where I work have magnets to gather FOD.
They are covered with a hinged flap of aluminum that can be folded away to easily clear the magnets. Quite clever.
A client lost a gold bracelet last year. They suggested that the magnets be inspected for the bracelet
Not so clever.
Sat Mar 14, 2020 8:00 am
FYI,
That is an International Harvester M5H6 2.5 ton truck. Also, it is the dump version, which is even rarer to see. Compared to the GMC CCKW's 560,000 built in WWII, there were only 30,000 M5H6's built, nearly all used by USMC, USN, and USCG.