“The low-melting-point metals such as bismuth, lead, tin, and cadmium are added to aluminum to make free-machining alloys.”

“The bismuth target is cooled during irradiation to prevent the volatile astatine disappearing.”

“These include lead, aluminium, arsenic, mercury, cadmium, gold, bismuth, antimony, and beryllium.”

“Fine specimens of wurtzite, stannite, bismuthinite, and franckeite are relatively common at Llallagua.”