JB Slear, a gold and silver broker based in Arizona specialises in helping high net worth clients take physical delivery of gold and silver futures contracts. He said "we're finding more restrictions being applied to overseas buyers, one Comex warehouse will not allow overseas deliveries."

Slear tells his clients that they may have to wait more than two weeks to take delivery as delays and complications in the process have become increasingly commonplace. In some cases this has fueled concern that stockpiles are running out.