I am not exactly sure, perhaps someone else can help out.
I know that if you take delivery on a lot of futures contracts at once, you might need to hire cowboys and private jets.
"Meanwhile, back at the ranch, (the Circle K Ranch in Texas) brother in law Randy Kreiling and his brother Tilmon held a shooting contest amongst the cowboys to find the best marksmen. The dozen best marksmen were hired for a special assignment to ride shotgun on one of the largest private silver transfers in history. The Circle K cowboys flew on 3 specially chartered 707 jets to Chicago and New York where they were met by a convoy of armored trucks during the middle of the night. Forty million oz of silver was loaded onto the planes and they immediately flew to Zurich where they were met by another convoy of armored trucks. The cowboys loaded the trucks and silver was dispersed to six different storage locations in Switzerland. The transfer cost Bunker and Herbert $200,000. The storage costs for the 40 million oz in Switzerland and the 15 million oz still in the US amounted to $3 million/year." (from "H.L. Hunt's Boys and the Circle K Cowboys", January 26, 2004)