Back in the good ole 707 days out of Belgium we carried the lions, rhinos, llamas, pigs, chickens, rockets, hand grenades and the like but during gulf war 1 in '91 we carried 2 flights a day of rocks. It seems the king of Saudi proclaimened all in his kingdom should have a gas mask so we were hired to transport gas masks from Bratislava to Jeddah. Turns out that the factory couldn't keep up so they crated up rocks and sent them. The Saudis were so slow in opening the crates and distributing to their people that they didn't discover it until the day before the war ended. That was about 2,000 tons of rocks. hazzard pay was great.