During the 2013 conclave that led to the election of Pope Francis, the black smoke was produced using a mixture of potassium perchlorate, anthracene (a component of coal tar) and sulfur.

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If no pope is chosen, the ballots are mixed with cartridges containing potassium perchlorate, anthracene (a component of coal tar), and sulphur to produce black smoke. But if there is a winner ...

If no pope is chosen, the ballots are mixed with cartridges containing potassium perchlorate, anthracene (a component of coal tar), and sulfur to produce black smoke. But if there is a winner ...

A change in popes — through death or resignation — is a complicated process, with centuries-old rituals involving the transition in leadership for both the spiritual head of the global ...

FILE - Tables and chairs line the Sistine Chapel at the Vatican in preparation for the conclave, on April 16, 2005. (AP Photo/Pier Paolo Cito, File) ...

To produce black smoke, a cartridge containing potassium perchlorate, anthracene — the component of coal tar — and sulfur is burned with the ballots. For white smoke, a cartridge of potassium ...

She said: ‘It's no longer this way, but it was back then – Quaker Oats, here in the United States, the strawberry version had artificially dyed red 40 made from petroleum and coal tar dyed ...

To produce black smoke, a cartridge containing potassium perchlorate, anthracene — the component of coal tar — and sulfur is burned with the ballots. For white smoke, a cartridge of potassium ...

If no pope is chosen, the ballots are mixed with cartridges containing potassium perchlorate, anthracene (a component of coal tar), and sulfur to produce black smoke. But if there is a winner, the ...