The ancient Romans used lead to the production of bronze. In addition, lead was used, inter alia, for the production of centrifugal floors, vessels, water pipes and seals. Today we know that lead is a highly toxic heavy metals and is therefore not to manufacture the above products is suitable. For this reason one uses day to day lead among other things, in radiology, in the nuclear industry and the manufacture of storage batteries.
The demand of lead for years has been steadily increasing. Since, however, can not be directly invested in lead, there are so-called lead certifikates, which can acquire the investors.