What if short sellers fail to close their positions on the delivery date of commodity futures?
First ask someone. If you are not a legal person a few days ago, the futures company will inform you to close your position, or someone will help you close your position. Then, if you are a legal person, you should have enough lots to deliver the whole multiple, otherwise someone will help you close the position and wait for delivery. If you die and refuse to deliver the goods, then your deposit will be gone. Probably so, so don't worry too much about this kind of problem.