Study to assess breast cancer risk for female firefighters

Firefighters are exposed to flame retardants,
diesel exhaust and other toxic chemicals,
which may affect their health.

When firefighters rush out the firehouse doors, sirens screeching on the way to fight fires, they put their lives on the line in more ways than one.

In responding to roughly 28,000 fire calls a year, members of the San Francisco Fire Department are routinely exposed to flame retardants, diesel exhaust and other toxic chemicals that seep out of raging infernos and work their way into the air.

A growing body of evidence strongly suggests that exposure increases firefighters’ risk of developing cancer. But until now, studies have focused on men.

That’s about to change. Members of the San Francisco Fire Department are working with researchers at UC Berkeley, UCSF and the Silent Spring Institute to find out whether exposure to toxic chemicals increases the risks of breast cancer in female firefighters.

The project, known as the Women Firefighters Biomonitoring Collaborative Study, has been under way for about a year.

“Since breast cancer is a cancer that more commonly affects women, and because of anecdotal evidence that the firefighters have been experiencing (many cases of breast cancer), we wanted to see if there was a link,” said Jessica Trowbridge, a UC Berkeley researcher who is coordinating the study.

Trowbridge and her colleagues are gathering blood and urine samples from about 160 women — 80 San Francisco firefighters and 80 city office workers who will serve as the control group — to use in measuring chemical, hormone and melatonin levels.

They will also measure the lengths of the women’s telomeres, caps on the ends of chromosomes that are associated with aging and cancer, also thought to be related to chemical exposure and working demanding night shifts.

Firefighters in general have higher rates of cancer, especially respiratory, digestive and urinary system varieties, a recent National Institute for Occupational Safety and Health study found.

That study included women, but there weren't enough of them to draw robust conclusions about their cancer risks, according to the Centers for Disease Control and Prevention.

With about 225 female firefighters, San Francisco is better equipped than most cities for a study like this: Women make up about 13 percent of its firefighting population, said Heather Buren, a lieutenant and paramedic with the fire department who is working on the study.

In 2011, less than 5 percent of firefighters nationwide were women, according to the Bureau of Labor Statistics.

Researchers will also test for other chemicals that could contribute to higher rates of cancer in both groups of women, who are probably exposed to personal care and household products as well.

There has been a cultural shift with respect to chemical exposure. For one, firefighters now have better breathing masks, which they’re encouraged to wear for longer periods of time in toxic environments.

There are also rules prohibiting members of the department from storing their turnouts — the suits they wear to fight fires — in firehouse rooms where they eat and sleep.

The San Francisco Firefighters Cancer Prevention Foundation, which organizes screenings and promotes cancer prevention in the department, is partially responsible for those changes. It was formed in 2006 by Tony Stefani, a retired firefighter who himself fought cancer.

Researchers have nearly finished enrolling participants for the breast cancer study. They hope to have results published in two years. The women who participate in the study will be able to see their individual results when they are complete.

Source: San Francisco Gate. This article has been edited for length.

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Sawmill ordered to pay for fatal fire

WorkSafeBC orders mill to pay $724,000 in penalties, levies for 2012 fire

Woodworking can cause a buildup of explosive sawdust.

The company that owns the northern British Columbia sawmill where two workers were killed and 22 others injured in a explosion and fire has been ordered by WorkSafeBC to pay more than $724,000 in penalties and levies.

The April 23, 2012 blaze at Prince George's Lakeland Mills Ltd. claimed the lives of Alan Little, 43 and Glen Roche, 46 and followed a similar deadly explosion only months earlier at the Babine Forest Products sawmill in Burns Lake, B.C.

The province's Criminal Justice Branch announced earlier this year it would not lay charges against either of the companies in the mill blasts because it feared the evidence collected wouldn't be admissible in court.

But WorkSafeBC said recently that Lakeland Mills breached the Workers Compensation Act and Occupational Health and Safety Regulations and ordered it to pay a $97,500 administrative penalty and a $626,663 claims-cost levy for violating the act and the regulations.

"The dollar value of a penalty or claims cost levy does not and cannot reflect the loss of lives and the pain and suffering of workers and families,'' the agency states on its website, adding the company has the right to appeal and review the penalties.

The order follows a similar $1-million ruling in April by WorkSafeBC against Hampton Affiliates, the owners of the Babine mill.

Lakeland Mills president Greg Stewart responded to Tuesday's report with a written statement, saying the company had just been notified earlier in the day.

"It will take some time to review the information,'' he said. "Only then will we be in a position to respond to WorkSafeBC's allegations.''

Shane Simpson, the New Democratic labor critic, called the penalties and assessments a slap on the wrist and of cold comfort to the families of the workers killed and the survivors.

He reiterated calls for an independent inquiry.

"We haven't got to the bottom of this,'' he said. "We haven't found closure for the families, and I'm afraid that's not going to happen until we have the kind of independent inquiry that has been called for across the board by most people other than the government.''

The fire at the mill broke out at about 9:30 p.m. on April 23, 2012, and WorkSafeBC found the mill's northeast corner exploded outward. A few seconds later another section, known as the bag house, erupted in flames, it found.

The explosion traveled east to west through the mill's operating level, destroying the mill, killing and injuring the workers.

All the evidence indicated wood dust was dispersed throughout the mill and in a high-enough concentration to explode, stated a WorkSafeBC report issued in May.

The report noted the primary explosion occurred an area of about three-square meters which was surrounded by a conveyor, steel-plated ceiling and exterior wall.

The report described the important relationship between containment and a fuel-like wood dust.

"If these components are contained and ignition occurs, the pressure develops to a degree that typically is violent and destructive,'' it stated.

The friction that ignited the blaze was caused when a piece of equipment known as a gear-reducer cooling fan failed, and a rotating shaft generated friction, heat and a temperature of 577 degrees Celsius, the report added.

As a result, the airborne dust burned away in the containment zone during the primary explosion and the secondary explosions, and fire leveled the mill, it stated.

The report also cited several underlying factors.

There was a lack of a dust-collection system and ineffective dust-control measures, as well as ineffective maintenance and inspection of the gear reducers, it found.

The configuration of the waste conveyor increased airborne wood dust as well, and wood and weather conditions played a role, the report noted.

"The weather conditions resulted in a very dry environment with low humidity,'' it stated. "The condition was compounded by the very dry beetle-killed wood. The dusts produced were drier, finer and migrated throughout the mill.''

Finally, the report cited "inadequate supervision of clean-up and maintenance staff.''

The agency said it has ordered every B.C. sawmill to assess the risks and hazards of combustible dust and implement effective dust-control programs.

Followup inspections have been ordered by WorkSafeBC at other sawmills and wood-processing operations, and the agency has ordered hazard alerts for gear reducers and wintertime conditions when there are increased risks.

Source: The Canadian Press via OHS Canada

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Toxic chemicals a concern for firefighters

Toxic substances released by fires can linger on uniforms
and equipment, leading to high exposure levels.

More than 200 empty pairs of firefighter boots recently lined the steps of the Rotunda in San Francisco's City Hall.

Each pair represented a local firefighter who lost his or her life "with their boots off" due to cancer in the last 14 years, said Tony Stefani, president of the San Francisco Firefighters Cancer Prevention Foundation.

"In just the last three months, we've had two active and four retired firefighters die of cancer," said Stefani, a retired San Francisco Fire Dept. captain and cancer survivor, in an interview before the event.

The display is one of at least 15 "Give Toxics the Boot" events around the country this week. From Spokane, Wash., to Augusta, Maine, firefighters are calling for stricter regulations on flame retardants and other toxic chemicals they say are causing cancer and other diseases among their ranks.

"We take every precaution we can to minimize our exposure and risk, yet we're still being exposed to these chemicals on a daily basis," said Emmett McNamee, a 20-year veteran Spokane firefighter. "And these are bio-accumulative. They build up in our systems."

Public health advocates are standing alongside firefighters in the heated battle.

"Our first responders and firefighters are disproportionately exposed and affected by the chemicals that are in our homes," said Lindsay Dahl, deputy director for the non-profit Safer Chemicals, Healthy Families, one of the organizations participating in the campaign.

"They serve, just like pregnant women and children, as canaries in the coal mine for the health effects we're seeing from chemicals we're exposed to every day."

To fight a fire means confronting a toxic soup of burning chemicals and their byproducts, including dioxins, furans and formaldehyde.

Many of the most toxic fumes released by today's fires actually come from chemicals added to everything from clothes to couches to computers in an effort to retard flames.

But, as an investigation by the Chicago Tribune uncovered, those additives may offer no meaningful fire protection.

A firefighter's exposure to chemicals can continue long after the blaze is out. Chemicals may linger on the skin, uniform, respirator, helmet and other gear. And if a firefighter wears any of that stuff home, their family may be exposed as well.

Scientists recently tested the blood of 12 California firefighters immediately after they responded to an alarm.

The results, published in June, showed significantly greater concentrations of flame retardants and other modern household chemicals in the firefighters compared with average Americans. Levels of polybrominated diphenyl ethers, or PBDEs, one common flame retardant, were three times higher in the firefighters' blood.

A separate study, published in October by the National Institute for Occupational Safety and Health, evaluated the health of nearly 30,000 career firefighters in San Francisco, Chicago and Philadelphia.

Researchers found higher rates of prostate cancer, kidney cancer, multiple myeloma, and other cancers compared with the general population.

Stefani, the former San Francisco captain, said he has a message for the chemical lobbying industry: "We are sick and damn tired of being your canaries sent into the cave every time we fight a fire. We're sick and tired of seeing the men and women of our profession contracting and dying of this insidious disease.

"We're not only concerned about firefighters," added Stefani. "We're concerned about the population in general with ongoing, daily chemical exposures."

Source: Huffington Post. The article has been edited for length.


Toxic chemicals an occupational risk for firefighters

Fighting fires is risky enough - but back in the station or at home, firefighters should not have to be concerned with toxic chemical exposure. Unfortunately, toxins can linger on uniforms, equipment and hair as well as skin, so exposure risks remain high.

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Electrocorp's air purifiers are equipped with many pounds of activated carbon to target VOCs, chemicals, fumes and odors, including formaldehyde and hundreds of other toxins. The air filtration system also includes a HEPA to trap particles and dust as well as various prefilters to prolong the main filters' lifespan.

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Dust and explosion hazards cost company

East Providence, RI, company cited for combustible wood dust and other hazards

Wood dust is a common risk in
wood-working industries.

PROVIDENCE, R.I. – On Aug. 20, 2013, a combustible wood dust explosion and fire occurred at Inferno Wood Pellet Inc. in East Providence, injuring a worker and partially demolishing the building.

The ignition of wood dust in the plant's production room migrated to a retention bin, resulting in an explosion that spread through the building.

An investigation by the Providence Area Office of the U.S. Department of Labor's Occupational Safety and Health Administration found that employees at the plant were exposed to wood dust explosions, deflagrations, or rapid combustion, and other fire hazards due to inadequate or absent preventive and protective measures in the wood pellet processing system and its equipment.

Specifically, OSHA found that the retention bin lacked spark detection, explosion suppression, fire/explosion isolation and explosion venting devices; conveyor systems carrying combustible wood products lacked spark detection, fire suppression and/or fire isolation devices; dust collection systems and dust segregation barriers were not maintained to minimize fire sources; and an opening in the fire wall between the plant's production room and chip room allowed a fireball to enter the chip room and spread the fire.

OSHA identified additional fire hazards at the 275 Ferris Ave. plant, such as the accumulation of combustible wood dust on various locations and surfaces within the plant, an incomplete and inadequate fire prevention plan and lack of dust-tight electrical equipment where combustible wood dust accumulated.

Other hazards included an incomplete respiratory protection program; lack of noise monitoring; inadequate chemical hazard communication and training; excess amounts of liquefied petroleum gas stored in the building; an untrained forklift operator; and lack of procedures and training to ensure that all equipment was properly deenergized to prevent unintended activation.

Because of these and other hazards, OSHA has cited Inferno for 11 serious violations of workplace safety standards and has proposed $43,400 in fines. A serious violation occurs when there is substantial probability that death or serious physical harm could result from a hazard about which the employer knew or should have known.


Detailed information on wood dust hazards and safeguards is available here.

Under the Occupational Safety and Health Act of 1970, employers are responsible for providing safe and healthful workplaces for their employees. OSHA's role is to ensure these conditions for America's working men and women by setting and enforcing standards, and providing training, education and assistance.

Source: OSHA

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