At the last conclave, in 2013, the Vatican said it used a mixture of potassium perchlorate, anthracene and sulphur to produce black smoke, and potassium chlorate, lactose and rosin for white.

VATICAN CITY (AP) — Black smoke poured out of the Sistine Chapel chimney on Wednesday, signalling that no pope had been elected as 133 cardinals opened the secretive, centuries-old ritual to ...

Vatican firefighters were seen on the roof of the Sistine Chapel installing the chimney, a key moment in the preparation for the May 7 conclave.

VATICAN CITY (AP) — Black smoke poured out of the Sistine Chapel chimney on Wednesday, signaling that no pope had been elected as 133 cardinals opened the secretive, centuries-old ritual to ...

VATICAN CITY — Firefighters on Saturday installed the top of the Sistine Chapel chimney that will signal to the world that a new pope has been elected, as the Vatican took measures to ...

Vatican firefighters were seen on the roof of the Sistine Chapel installing the chimney, a key moment in the preparation for the May 7 conclave. Stream NBC4 newscasts for free right here, right now.

Details for the procedure of next week's conclave have not yet been confirmed. bur-ar/ams/jm Workers install the chimney on the roof of the Sistine Chapel in The Vatican, on May 2, 2025.