These Ten ,C-130's were loaded with 13 plywood pallets each had three 55 gallon drums of three types of petroleum.(mogas,diesel,pennaprime)
These were droped on and over the Cu-Chi tunnels north west of Bien Hoa. After the drop, fighter aircraft would set them on fire with Napalm to burn into the tunnels. Never knew how sucessful this turned out. We could see all the smoke from the base