At the risk of thread drift, let me tell you that the most dangerous cargo that I ever carried was a load of empty jerrycans.
The Army had been exercising in the Oman bundu and someone decided that the best way of getting the jerrycans back to Sharjah was to put six pallets of them in my Argosy.
The caps started blowing open not long after take-off from Ibri and I was very happy to throw the old girl on the ground at Sharjah. I kept thinking of the five inverters underneath the freight bay floor.
Jerrycans are generally fine as long as they are full but they are bloody dangerous when they are empty or nearly empty.