The Brief

A former stoneworker named Lopez sat confined to his East Bay home, breathing with the help of a whirring oxygen supply machine through clear tubes pronged to his nostrils. After years of making kitchen countertops from engineered stone, the 43-year-old was diagnosed with silicosis, an often deadly lung disease linked to inhaling toxic dust the material releases when powercut.

The once-active father of four now awaits a double lung transplant. He can no longer support his family or walk a few steps without pausing to catch his breath. Two stonecutter friends died after working with the man-made material, also known as artificial stone or quartz. Three others are on a waitlist for lung transplants, he said.

“I feel desperate just sitting here unable to do anything,” said Lopez, an undocumented immigrant who worked in California for more than two decades. KQED is withholding his full name, as he fears losing vital medical care if arrested by federal authorities.

“It’s agonizing waiting for the hospital to call me so I can finally get the transplant I’m waiting for and be able to go back to work,” he said.

As silicosis cases surge in California’s countertop fabrication industry, medical and occupational safety experts warn that current regulations won’t protect hundreds more relatively young workers like Lopez from contracting the incurable illness. The state must act urgently to phase out hazardous engineered stone from fabrication shops, as Australia did, they say, to stem a growing health crisis.

Australia banned the use, supply and manufacture of engineered stone benchtops in July 2024, forcing major manufacturers to switch to silica-free alternatives in that market, though they still sell their higher-silica products in the U.S. The companies maintain that their products are safe if fabrication shops follow protocols.

A photo of a pair lungs with silicosis used in a Cal/OSHA presentation slide about the disease, and rising number of cases in California, at a public meeting on Nov. 13, 2025.

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“Silicosis is preventable when proper safety and health measures are in place to protect workers against inhalation of silica dust in the workplace,” a spokesperson for Cosentino North America said in a statement. “The company continues its efforts in research and development for the ongoing improvement of its products.”

Between 1,000 to 1,500 stoneworkers in California could develop silicosis within the next decade, leading to roughly 285 deaths, according to California’s Division of Occupational Safety and Health, or Cal/OSHA. The state is home to about 5,000 countertop fabrication workers, predominantly Latino immigrants.

Artificial stone in the U.S. market often contains more than 90% pulverized crystalline silica, far more than natural stones such as marble and granite. When workers powercut, polish and grind slabs of the material, tiny silica particles are released. If inhaled, they can lodge in the lungs and cause tissue scarring that progressively impedes breathing. Respirable silica can also lead to lung cancer, chronic obstructive pulmonary disease and other illnesses.

To save lives, the Governor’s Office could issue an emergency declaration pausing the processing of artificial stone until a permanent ban is pursued through rulemaking, according to a Sept. 4 memorandum obtained by KQED. Drafted by a committee of doctors, occupational safety experts and worker advocates convened by Cal/OSHA, the letter was addressed to the state board responsible for adopting new workplace safety regulations, but was not sent.

Gov. Gavin Newsom’s press office did not respond to requests for comment about his position on banning engineered stone in fabrication shops. A spokesperson with the Department of Industrial Relations, which oversees press requests for both Cal/OSHA and the Occupational Safety and Health Standards Board, said the draft had not been vetted.

“The memo referenced … is an incomplete working draft by the Silica Technical Committee and not by Cal/OSHA. None of the recommendations are final,” the spokesperson said in a statement. “Cal/OSHA continually works to protect the health and safety of California’s workers and enforces all regulations adopted by the Board.”

Several board members have publicly expressed dismay for months at the steep climb in silicosis cases, but the agenda for their next meeting on Thursday does not include decision-making on artificial stone.

Maegan Ortiz, director of the Instituto de Educacion Popular del Sur de California, said that although the state approved stricter standards nearly two years ago, California has made little progress in protecting stoneworkers still inhaling engineered stone dust on the job.

Lopez adjusts the breathing tube connected to his oxygen tank in his home in Pittsburg on Nov. 15, 2025. (Martin do Nascimento/KQED)

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Martin do Nascimento

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“We need to ban this. I think the concern is great, but it is kind of like thoughts and prayers in the face of other crises that don’t go far enough,” said Ortiz, whose organization has been surveying stoneworkers in Los Angeles County, the state’s silicosis epicenter. “We’ve seen the conditions ourselves on the ground in terms of the amount of dust that is there, even in these bigger shops that are following the regulations. Workers see the dust, they carry it on them.”

Since 2019, more than 430 workers have been confirmed with silicosis in California, including 25 who died and 48 who underwent a lung transplant, according to state public health officials tracking reported cases. Half of those sick are located in Los Angeles County. Nearly all are Latino men, some in their 20s, who said they didn’t know how dangerous artificial stone dust could be. About 40% of silicosis cases were identified this year.

Lopez said he worked in licensed shops using safety gear and methods his supervisors said would protect him. He wore filter masks and cut and polished engineered stone with machines that covered slabs with water to suppress dust. But mounting evidence shows silica particles in artificial stone dust are so small and toxic that it doesn’t take much to hurt workers. Silica can penetrate filter masks and remain on workers’ clothes and tools when water dries.

Australia tried banning drycutting of engineered stone, similar to Cal/OSHA rules in place since December 2023 and a bill Newsom signed last month, SB 20. Australia also tried additional safeguards, including full-face powered air-purifying respirators, ventilation systems and monitoring, like California’s strict regulations that go beyond federal requirements. But in both places, experts say, the sophisticated and costly measures are not realistic for an industry made up of mostly small shops with only a few workers.

“I think it’s completely unfeasible,” said Dr. Ryan Hoy, a respiratory physician and researcher at Monash University in Melbourne, Australia. “I often use the analogy that you can work with asbestos safely, you can work with uranium safely, but you need to have in place very sophisticated control measures.”

In California, most fabrication shops are not complying with drycutting bans, respiratory protection, monitoring or other requirements. About 94% of 107 worksites investigated by Cal/OSHA had violations of the silica regulations as of Oct. 16.

Lopez’s wife said she wished her husband had more accurate information from manufacturers, vendors and employers before working with artificial stone so he could have chosen whether to take on the risk. Considering the impact of his disease on her family, the 41-year-old choked back tears.

“It’s painful because I’ve always seen him working. He’s always looked out for us. He’s the pillar of our family,” she said in Spanish, adding that her youngest son is 3. “It hurts us deeply.”

Lopez’s state disability benefits have run out, he said, and the family relies on financial support from their oldest daughter, a 20-year-old medical assistant. He became one of hundreds of workers in the U.S. and other countries who have sued top manufacturers of engineered stone — including Minnesota-based Cambria, Israel-based Caesarstone and Cosentino, headquartered in Spain — claiming silica-related injuries.

Caesarstone, which generated nearly half of its $303 million in revenue so far this year in the U.S. market, reported claims by more than 500 individuals in its latest financial results. The company recorded a $46 million provision for probable losses, with $24.3 million covered by insurance. But costs could grow, as most of the 320 U.S. claims are awaiting trial.

Caesarstone won one case in the U.S., which remains under appeal, and settled another this year, according to Nahum Trust, Caesarstone’s chief financial officer, during an earnings call this month. Last year, a jury awarded a 34-year-old stoneworker $52 million after finding Caesarstone and other companies liable, a decision the company has appealed.

The company developed crystalline silica-free countertop surfaces in preparation for restrictions in Australia and recently unveiled what it advertises as safer alternatives for fabrication workers in the U.S. Caesarstone’s sales were down this quarter in the U.S. and Canada, due to softness in the market and competitive pressures, according to Trust, but sales are up in Australia.

A stone fabricator places his hand on a table that he cut at his home in San Francisco on Oct. 17, 2023.

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“Our first year of real growth in this market since the silica ban implementation,” Trust said. “This reflects early recovery and the successful launch of our zero silica collection.”

Cosentino said it has also moved to offer newer products due to safety concerns, including a new mineral-surface product with zero crystalline silica that will be available next year globally.

Cosentino, Caesarstone and associations representing manufacturers declined to comment on why they continue selling their high-silica engineered stone products in the U.S. if they have alternatives for the Australian market.

Global demand for artificial stone, a multibillion-dollar industry in the U.S., is expected to significantly grow. In California, sales are expected to increase even more due to efforts to rebuild the more than 16,000 homes and buildings destroyed by January wildfires in Los Angeles.

Consumers prefer the stain-resistant material because it’s often cheaper than natural stone and offers diverse colors and designs. But many homeowners don’t know of the potential health impacts to the workers who make their countertops.

Pulmonologists predict silicosis cases will keep rising, even if exposure to silica dust stopped immediately. By the time workers feel symptoms, the disease has often advanced, Hoy said.

“Unfortunately, that is definitely the tip of the iceberg of workers that are currently affected,” said Hoy, who screened stoneworkers in Australia for silicosis and treats diagnosed patients.

As manufacturers switched to silica-free products in Australia, costs increased, but consumers still purchased countertops for renovations and new buildings. The industry carried on without the old material.

Dr. Hayley Barnes, a pulmonologist who studied silicosis in Australia, said that initially, talking about banning the material in that country felt like a huge ordeal, with predictions that the building industry would collapse and jobs would disappear. But that didn’t happen, she said.

“The companies just made a low-silica or no-silica product, which is currently available in Australia and many other countries,” Barnes said.

Now medical director of UCSF’s Interstitial Lung Disease Program, she worries many cases in California have not yet been diagnosed, and stoneworkers are suffering.

“We could do better. It’s been done elsewhere,” Barnes said. “People would still get their houses and apartments built and workers would be better protected.”

Dr. Sheiphali Gandhi, an assistant professor of medicine at UCSF and a colleague of Barnes who treats dozens of silicosis patients, said she wants California to begin phasing out artificial stone countertops. The move would ensure consumers purchase materials that also protect workers, she said.

“We’ve tried all these regulations, but we still are seeing that the cases are going up,” Gandhi said. “We need to move towards the more effective strategies of elimination or substitution, where we really go for safer alternatives.”

For now, Gandhi must wade through a stack of about 40 additional cases of very sick workers she has been referred.

“It’s just like every month, my mailbox is full of more referrals of silicosis cases,” she said. “The number of cases is exploding. It’s insane.”

After copper wire theft left the Sixth Street Bridge in darkness for years, the city of Los Angeles has hired a Pasadena-based engineering firm to restore the lighting, a move aimed at improving safety for Boyle Heights and the surrounding neighborhoods.

City officials contracted Tetra Tech to relight the bridge, which has been plagued by copper wire theft since its opening in 2022. The outages have frustrated residents and commuters who use the bridge to walk, run, bike and drive between downtown LA and the Eastside.

Aging infrastructure, copper wire theft and delayed repairs led to nearly 2,000 streetlight service requests in Boyle Heights in 2024. Nearly seven miles of copper wire have been reported stolen from the Sixth Street Bridge.

Tetra Tech began working on the project’s design in January and is scheduled to restore the wiring to all lights along the bridge, including along roadways, barriers, ramps, stairways and arches before the 2028 Olympic and Paralympic Games come to Los Angeles that summer, according to a Feb. 18 news release from Councilmember Ysabel Jurado’s office.

The firm – which was selected by the city’s Bureau of Engineering – will fortify the pull boxes, service cabinet and conduits to protect against copper wire theft. Tetra Tech will also install a security camera system to deter vandalism and theft.

“When our streets are well-lit, our neighborhoods feel safer and more connected,” Jurado said in the news release. “The Sixth Street Bridge plays a vital role in connecting Angelenos between the Eastside and the heart of the City.”

Jurado – who pledged to look into fixing the Sixth Street Bridge lights when she was elected in 2024 – said the partnership with Tetra Tech “moves us one step closer to restoring one of the City’s most iconic landmarks as a safe, welcoming public space our communities deserve.”

According to officials, the total contract value with Tetra Tech is $5.3 million, which includes work on the Sixth Street Bridge as well as the Sixth Street PARC project, which encompasses 12 acres of recreational space underneath and adjacent to the bridge.

The PARC project will make way for sports fields, fitness equipment, event spaces and a performance stage. PARC’s grand opening is anticipated later this year.

Because the work for the PARC project and the bridge is connected, the Board of Engineers recommended using the existing PARC contract with Tetra Tech to ensure completion ahead of the 2028 Games, officials said.

The cost for the design work on the bridge alone is roughly $1 million.

On Thursday, Jurado announced that her streetlight repair crew had restored lighting and strengthened infrastructure for more than 400 streetlights across her district, including Boyle Heights, Lincoln Heights, and El Sereno. Next, they plan to tackle repairs in downtown L.A.

For the last 70 years, the  27th Street Bakery hasn’t just been the go-to place for people who want to spend less time in the kitchen — it’s become a staple in South Central, providing jobs and security for people living in the neighborhood.

The bakery is Black-owned and in its third generation as a business. It’s co-owned by sisters Denise Cravin-Paschal and Olympic gold-medalist Jeanette Bolden-Pickens, as well as her husband Al Pickens.

“My grandfather employed a lot of people around here as he was growing his business and so have we,” Cravin-Paschal told the LA Local. “They feel that this is a safe place to come. We have the respect of being here for 70 years and so we enjoy it.”

The bakery sits on Central Avenue, the focal point of Black Los Angeles between the 1930s and 1960s. As segregation laws were struck down, Black people in LA began to move elsewhere and took their businesses with them. The bakery, though, is still Black-owned and operating 70 years later.

Today it is considered the largest manufacturer of sweet potato pies on the West Coast, the bakery’s website states. Last year, the city and District 9 Councilmember Curren Price Jr. presented the bakery with a plaque that reads: “A Walk Down Central Avenue — A legacy of community: powered by the people and its places.”

It hangs on the wall in the bakery’s lobby along with several other photos and recognitions they’ve received over the years.

“Our goal is to keep this legacy alive and we’re celebrating 70 years of being here in business. We are so grateful to the community,” Bolden-Pickens said.

In celebration of its anniversary, a sign in the bakery says it is offering one slice of sweet potato pie for 70 cents on Saturdays starting this weekend through Oct. 31.

The bakery was a restaurant at first bringing Southern flavor to LA

The bakery began as a restaurant in the 1930s on Central Avenue founded by Harry and Sadie Patterson, according to the family and Los Angeles Conservancy. Back then, Central Avenue was the epicenter of LA’s Black community and Patterson, who came from Shreveport, Louisiana, decided to bring his Southern recipes to life in Los Angeles.

The restaurant later became a bakery in 1956, according to the bakery’s website. Patterson’s daughter Alberta Cravin and her son Gregory Spann took over the bakery in 1980. After Spann passed away, Cravin’s daughters — the sisters who are current owners — took over the family business. Five other relatives also help them out, Cravin-Paschal said.

These days, the bakery is open Tuesday through Saturday each week and the bulk of their customers are other businesses. They serve nearly 300 vendors including convenience stores like 7-Eleven, Ralphs grocery stores, Smart & Final, ARCO gas stations, restaurants and other mom-and-pop stores. Louisiana Fried Chicken has been a customer since 1980, Cravin-Paschal said.

An average delivery today is usually 45 dozen pies and they also ship orders out of state, Cravin-Paschal said.

She also told The LA Local they have six full time employees and most of them have worked for the bakery at least 25 years.

“I like working here, I like the people,” Maximina “Maxi” Rodriguez, a longtime employee, told The LA Local. After 32 years at the bakery, she said she plans to retire in June. “I’m going to miss it.”

Rodriguez said working at the bakery is a family affair for her, too. Her sister, Guadalupe Garibaldi, has worked at the bakery for over 40 years and her niece, Yoselin Garibaldi, is now a cashier and driver.

Patterson’s lessons inspired 3 generations to keep the business running

For Bolden-Pickens and Cravin-Paschal, running the bakery is a labor of love. Both told The LA Local that their grandfather taught them to stay true to the fresh ingredients they use and not to cut corners.

These lessons helped Bolden-Pickens in her life before taking over the family business. She won a gold medal as part of the U.S. 4×100 meter relay team in track and field during the 1984 Olympics.

“What I learned from being an Olympian is that it takes a lot of hard work. I learned that from my grandfather,” she said.

Bolden-Pickens said it hasn’t been easy running the business, but they’ve been able to stay afloat because of the lessons learned from their grandfather.

“I remember during the pandemic, we actually had to go to the egg farm and stand in line for a couple of hours just to get the eggs that we needed,” Bolden-Pickens said. “We use the best spices. We make our own vanilla.”

Cravin-Paschal said after the death of their brother Gregory Spann, who was the main baker for nearly two decades, they struggled for a few years to keep the recipe and taste consistent. But eventually they figured it out.

“We had a little rough spot because we all know the recipes but you have to put it together (correctly),” Cravin-Paschal said. “Now we’re back to the original taste.”

As marijuana use among teens has grown in the past decade, researchers have been trying to better understand the health risks of the drug. Now, a new longitudinal study finds that cannabis use among adolescents increases risks of being diagnosed with bipolar and psychotic disorders, as well as anxiety and depression, years later.

"This is very, very, very worrying," says psychiatrist Dr. Ryan Sultan at Columbia University, a cannabis researcher who wasn't involved in the new study published in the latest JAMA Health Forum.

Strong study design

Researchers analyzed health data on 460,000 teenagers in the Kaiser Permanente Health System in Northern California. The teens were followed until they were 25 years old. The data included annual screenings for substance use and any mental health diagnoses from the health records. Researchers excluded the adolescents who had symptoms of mental illnesses before using cannabis.

"We looked at kids using cannabis before they had any evidence of these psychiatric conditions and then followed them to understand if they were more likely or less likely to develop them," says Dr. Lynn Silver, a pediatrician and researcher at the Public Health Institute, and an author of the new study.

They found that the teens who reported using cannabis in the past year were at a higher risk of being diagnosed with several mental health conditions a few years later, compared to teens who didn't use cannabis.

Teens who reported using cannabis had twice the risk of developing two serious mental illnesses: bipolar, which manifests as alternating episodes of depression and mania, and psychotic disorders, such as schizophrenia which involve a break with reality.

Now, only a small fraction — nearly 4,000 — of all teens in the study were diagnosed with each of these two disorders. Both bipolar and psychotic disorders are among the most serious and disabling of mental illnesses.

"Those are the scarier conditions that we worry about," says Sultan.

Silver points out these illnesses are expensive to treat and come at a high cost to society. The U.S. cannabis market is an industry with a value in the tens-of-billions — but the societal cost of schizophrenia has been calculated to be $350 billion a year.

"And if we increase the number of people who develop that condition in a way that's preventable, that can wipe out the whole value of the cannabis market," Silver says.

Depression and anxiety too

The new study also found that the risk for more common conditions like depression and anxiety was also higher among cannabis users.

"Depression alone went up by about a third," says Silver, "and anxiety went up by about a quarter."

But the link between cannabis use and depression and anxiety got weaker for teens who were older when they used cannabis. "Which really shows the sensitivity of the younger child's brain to the effects of cannabis," says Silver. "The brain is still developing. The effects of cannabis on the receptors in the brain seem to have a significant impact on their neurological development and the risk for these mental health disorders."

Silver hopes these findings will make teens more cautious about using the drug, which is not as safe as people perceive it to be.

"With legalization, we've had a tremendous wave of this perception of cannabis as a safe, natural product to treat your stress with," she says. "That is simply not true."

The new study is well designed and gets at "the chicken or the egg, order-of-operations question," says Sultan. There have been other past studies that have also found a link between cannabis use and mental health conditions, especially psychosis. But, those studies couldn't tell whether cannabis affected the likelihood of developing mental health symptoms or whether people with existing problems were more likely to use cannabis — perhaps to treat their symptoms.

But by excluding teens who were already showing mental health symptoms, the new study suggests a causal link between cannabis use and later mental health diagnoses. Additional research is needed to understand the link fully.

'Playing with fire'

Sultan, the psychiatrist and researcher at Columbia University, says the study confirms what he's seeing in his clinic — more teens using cannabis who've developed new or worsening mental health symptoms.

"It is most common around anxiety and depression, but it's also showing up in more severe conditions like bipolar disorder and psychosis," he says.

He notes that mental health disorders are complex in origin. A host of risk factors, like genetics, environment, lifestyle and life experiences all play a role. And some young people are more at risk than others.

"When someone has a psychotic episode in the context of cannabis or a manic episode in the context of cannabis, clinicians are going to say, 'Please do not do that again because you're you're you're playing with fire,'" he says.

Because the more they use the drug, he says the more likely that their symptoms will worsen over time, making recovery harder.

"What we're worried about [is if] you sort of get stuck in psychosis, it gets harder and harder to pull the person back," says Sultan. "Psychosis and severe mood disorders, particularly bipolar disorder are like seizures in your brain. They're sort of neurotoxic to your brain, and so it seems to be associated with a more rapid deterioration of the brain."

Some electric bikes in California could soon require license plates under a proposed state bill aiming to address the rise in electric bike related injuries.

AB 1942 or the E-bike Accountability Act, would apply exclusively to Class 2 and Class 3 electric bikes.

Class 2 bikes can be operated without peddling until it reaches the speed of 20 mph.

Class 3 bikes reach a max speed of 28 mph; motor assist could only kick in with peddling.

The bill would also require owners to carry proof of ownership and would direct the Department of Motor Vehicles to establish a registration process. It was introduced by Assemblymember Rebecca Bauer-Kahan of Orinda in Contra Costa County earlier this month.

E-bike injuries spiked 18-fold between 2018 and 2023, according to state traffic data.

The bill may be heard in committee March 16.