Fun fact. The cyanide is used to extract tiny tiny flakes of gold out of the earth. Tons and tons of dirt are being excavated, put on absolutely massive trucks (google gold mine trucks, they are indescribably huge), and sent to be processed with the cyanide.

If the cyanide is hard to obtain due to lack of supply, and companies can't process the flakes, this can do some crazy things to gold prices. Supply goes down while demand remains the same or more means price goes up.