Vatican firefighters install a chimney on the roof of the Sistine Chapel for the papal election

VATICAN CITY (AP) — Preparations for the conclave to find a new pope accelerated Friday with the installation of the chimney out of the Sistine Chapel that will signal the election of a successor to Pope Francis.

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.

After every two rounds of voting in the Sistine Chapel, the ballots of the cardinals are burned in a special furnace to indicate the outcome to the outside world.

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 burning ballots are mixed with potassium chlorate, lactose and chloroform resin to produce the white smoke.

The white smoke came out of the chimney on the fifth ballot on March 13, 2013, and Cardinal Jorge Mario Bergoglio was introduced to the world as Pope Francis a short time later from the loggia of St. Peter's Basilica. Francis, history's first Latin American pope, died April 21 at age 88.

The chimney installation took place as cardinals arrived in the Vatican for another day of pre-conclave discussions about the needs of the Catholic Church going forward and the type of pope needed to run it.

These consultations include all cardinals, including those over age 80 who are ineligible to vote in the conclave itself.

In recent days, they have heard reports about the Vatican’s dire financial situation, and have had the chance to speak individually about priorities going forward and problems they identified in Francis' pontificate.

Francis was a somewhat divisive pope, beloved by some for his focus on the poor and marginalized, but criticized by others who accused him of sowing confusion among the faithful on issues of morality and church law. These conservatives and traditionalists, who are not believed to have a majority among the 135 cardinal electors, are hoping a new pope will reassert core church teachings and act as a stabilizing figure in the Vatican bureaucracy.

Cardinal Beniamino Stella, who headed the Vatican office for clergy under Francis until his retirement in 2021, has been among the older, non-voting cardinals who has spoken during the pre-conclave sessions. According to America, the magazine of the U.S. Jesuits, Stella this week strongly criticized Francis’ reform of the Vatican bureaucracy that allowed women and lay people to head Holy See offices rather than clergy.

That reform, contained in a 2022 constitution, overhauled the Vatican bureaucracy and fulfilled a key mandate Francis received from cardinals going into the 2013 conclave that elected him pope. But some have criticized the reform, which was nine years in the works and sought to make the Holy See more service-oriented and efficient.

Francis named two laymen to head the Vatican communications operation and the economy ministry. More significantly, he named two nuns to head two of the most important Vatican offices: Sister Simona Brambilla as head of the Vatican office responsible for all the world’s Catholic religious orders, and Sister Raffaella Petrini as head of the Vatican City State administration. In that position, Petrini runs the city state and is responsible for everything from the Vatican Museums that provide the Holy See with most of its revenue, to the firefighters who installed the chimney on the Sistine Chapel Friday.

Their appointments were tangible evidence of Francis’ belief that women should have a greater decision-making role in church governance. But Stella, according to unnamed cardinals cited by America, objected to Francis’ decision to separate the power of governance in the church from the priesthood.

It is unclear what influence older cardinals such as Stella, who at age 83 will not actually cast a vote, will have on the younger cardinal electors. In general, cardinals of the more conservative old guard have stresesed the need for unity over pursuing Francis' more radical legacy.

“The pope has to ensure the unity of all of the church," said Cardinal Fernando Filoni, the retired head of the Vatican's evangelization office. "This is first and foremost. Everything else comes after,” the 79-year-old cardinal said as he arrived Friday for the pre-conclave discussions.

Cardinal Fernando Natalio Chomali Garib, the 68-year-old archbishop of Santiago, Chile, said the variety of points of view was useful in the pre-conclave meetings. Francis made Chomali a cardinal in December after appointing him to head the Chilean church through the continued fallout of the clergy sexual abuse scandal.

“For me, that I come from Chile, a far away country, hearing such different experiences is an enrichment, not only for me but for all of the church,” he said as he entered Friday.

A woman begs for money outside St. Peter's square at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Bernat Armangue)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Bernat Armangue)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

Firefighters place the chimney on the roof of the Sistine Chapel, where cardinals will gather to elect the new pope, at the Vatican, Friday, May 2, 2025. (AP Photo/Gregorio Borgia)

FILE - Visitors admire the Sistine Chapel inside the Vatican Museums on the occasion of the museum's reopening, in Rome, May 3, 2021. (AP Photo/Alessandra Tarantino, file)

NEW YORK (AP) — Thousands of nurses in three hospital systems in New York City went on strike Monday after negotiations through the weekend failed to yield breakthroughs in their contract disputes.

The strike was taking place at The Mount Sinai Hospital and two of its satellite campuses, with picket lines forming. The other affected hospitals are NewYork-Presbyterian and Montefiore Medical Center in the Bronx.

About 15,000 nurses are involved in the strike, according to New York State Nurses Association.

“After months of bargaining, management refused to make meaningful progress on core issues that nurses have been fighting for: safe staffing for patients, healthcare benefits for nurses, and workplace violence protections,” the union said in a statement issued Monday. “Management at the richest hospitals in New York City are threatening to discontinue or radically cut nurses’ health benefits.”

The strike, which comes during a severe flu season, could potentially force the hospitals to transfer patients, cancel procedures or divert ambulances. It could also put a strain on city hospitals not involved in the contract dispute, as patients avoid the medical centers hit by the strike.

The hospitals involved have been hiring temporary nurses to try and fill the labor gap during the walkout, and said in a statement during negotiations that they would “do whatever is necessary to minimize disruptions.” Montefiore posted a message assuring patients that appointments would be kept.

“NYSNA’s leaders continue to double down on their $3.6 billion in reckless demands, including nearly 40% wage increases, and their troubling proposals like demanding that a nurse not be terminated if found to be compromised by drugs or alcohol while on the job," Montefiore spokesperson Joe Solmonese said Monday after the strike had started. "We remain resolute in our commitment to providing safe and seamless care, regardless of how long the strike may last.”

New York-Presbyterian accused the union of staging a strike to “create disruption,” but said in a statement that it has taken steps to ensure patients receive the care they need.

"We’re ready to keep negotiating a fair and reasonable contract that reflects our respect for our nurses and the critical role they play, and also recognizes the challenging realities of today’s healthcare environment,” the statement said.

The work stoppage is occurring at multiple hospitals simultaneously, but each medical center is negotiating with the union independently. Several other hospitals across the city and in its suburbs reached deals in recent days to avert a possible strike.

The nurses’ demands vary by hospital, but the major issues include staffing levels and workplace safety. The union says hospitals have given nurses unmanageable workloads.

Nurses also want better security measures in the workplace, citing incidents like a an incident last week, when a man with a sharp object barricaded himself in a Brooklyn hospital room and was then killed by police.

The union also wants limitations on hospitals’ use of artificial intelligence.

The nonprofit hospitals involved in the negotiations say they’ve been working to improve staffing levels, but say the union’s demands overall are too costly.

Nurses voted to authorize the strike last month.

Both New York Gov. Kathy Hochul and Mayor Zohran Mamdani had expressed concern about the possibility of the strike. As the strike deadline neared, Mamdani urged both sides to keep negotiating and reach a deal that “both honors our nurses and keeps our hospitals open.”

“Our nurses kept this city alive through its hardest moments. Their value is not negotiable,” Mamdani said.

State Attorney General Letitia James voiced similar support, saying "nurses put their lives on the line every day to keep New Yorkers healthy. They should never be forced to choose between their own safety, their patients’ well-being, and a fair contract.”

The last major nursing strike in the city was only three years ago, in 2023. That work stoppage, at Mount Sinai and Montefiore, was short, lasting three days. It resulted in a deal raising pay 19% over three years at those hospitals.

It also led to promised staffing improvements, though the union and hospitals now disagree about how much progress has been made, or whether the hospitals are retreating from staffing guarantees.

Nurses strike outside New York-Presbyterian Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside New York-Presbyterian Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside New York-Presbyterian Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside New York-Presbyterian Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside New York-Presbyterian Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

Nurses strike outside Mount Sinai West Hospital, Monday, Jan. 12, 2026, in New York. (AP Photo/Yuki Iwamura)

FILE - A medical worker transports a patient at Mount Sinai Hospital, April 1, 2020, in New York. (AP Photo/Mary Altaffer, File)