Police in Missouri are trying to figure out if $700,000 in gold dust missing from a Pfizer medical lab was stolen or simply misplaced. Police in Chesterfield began their investigation after the gold dust turned up missing during an annual inventory at the lab. Pfizer had purchased the dust in 2011 to be used for research. While small amounts of gold dust may technically be light, it’s unlikely that a light breeze blew away the entire supply. $700,000 in gold dust would weigh between 30 and 70 pounds. Pfizer isn’t saying what kind of research it was conducting with the dust, but gold is commonly used in a number of industries, including electronics and dentistry.