Asbestos Textile Workers Show High Mortality Rates From Occupational Lung Diseases

A new study by Duke University, in conjunction with the University of Nevada (UNR) and the University of North Carolina, shows that former North Carolina workers employed in asbestos-textile plants have a definitively higher rate of asbestos-related diseases than the population at large.

The study, headed by Dana Loomis, Interim Director, UNR's School of Community Health Sciences, examined 5,770 employees who worked at least one day between January 1, 1950 and December 31, 1973.

The results, which showed that the mortality rate was significantly higher for all causes (1.47 as compared to a value of 1.00 for the general population), also showed that deaths from lung cancer ranked at 1.96 (as compared to a value of 1.00).

The pleura are the membranes that line the inside of the chest cavity and surround the lungs, enabling the lungs to expand to the appropriate degree inside the diaphragm when people breathe. Pleural mesothelioma is a type of pleural cancer caused primarily by asbestos fibers, and is the most common type of mesothelioma.

Asbestos fibers, inhaled, result in irritation of the pleura, or mesothelial lining. Because the body has no way to expel the fibers, the persistent irritation leads to lesions, which in turn lead to cancer.

Pneumoconiosis, the second category of occupational lung diseases, is an interstitial disease, a classic example of which is pulmonary fibrosis. Interstitial diseases affect the walls of the air sacs inside the lungs, rather than the pleural lining over the lungs, and result in scarring. This, in turn, limits a lung's ability to expand properly. Medication can occasionally slow the progress of pneumoconiosis, but many individuals, once affected, never regain the full use of their lungs, and lung transplants are the only option.

Asbestosis is a breathing disorder specifically caused by inhaling asbestos fibers, and is usually a cumulative effect, arising after years of exposure. The fibers cause lung scarring, which can gradually restrict breathing to such an extent that patients are unable to walk more than a few feet without stopping, and require constant oxygen. The symptoms, which can range from mild to severe depending on exposure and a person's general stamina, commonly don't appear until years after exposure to asbestos fibers.

The Duke, UNR study demonstrated a statistical risk across the entire spectrum of 2 to 3 percent higher for each year asbestos fibers were inhaled - figures which were more consistent among white males than for any other group surveyed. The second at-risk category was white females, and both groups scored higher in the risk assessment categories than black males, presumably because the latter group saw fewer smokers and workers who occupied different regions of the asbestos textile plants, namely preparation and carding operations, where fibers were shorter than in the spinning and twisting sections where white males generally worked, according to transmission electron microscopy, or TEM, analyses.

U.S. Environmental Protection Agency regulations (limiting asbestos to 1 percent of product by weight or volume) have driven the asbestos textile industry overseas. This is good news for American workers, but not so good for workers in places like Korea and Egypt, for example.

Attempts by the United Nations to add asbestos to the list of hazardous substances already on the Rotterdam Convention have been consistently opposed by Canada, which is the world's largest supplier of chrysotile asbestos.

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Asbestos Textile Workers Show High Mortality Rates From Occupational Lung Diseases

A new study by Duke University, in conjunction with the University of Nevada (UNR) and the University of North Carolina, shows that former North Carolina workers employed in asbestos-textile plants have a definitively higher rate of asbestos-related diseases than the population at large.

The study, headed by Dana Loomis, Interim Director, UNR's School of Community Health Sciences, examined 5,770 employees who worked at least one day between January 1, 1950 and December 31, 1973.

The results, which showed that the mortality rate was significantly higher for all causes (1.47 as compared to a value of 1.00 for the general population), also showed that deaths from lung cancer ranked at 1.96 (as compared to a value of 1.00).

The pleura are the membranes that line the inside of the chest cavity and surround the lungs, enabling the lungs to expand to the appropriate degree inside the diaphragm when people breathe. Pleural mesothelioma is a type of pleural cancer caused primarily by asbestos fibers, and is the most common type of mesothelioma.

Asbestos fibers, inhaled, result in irritation of the pleura, or mesothelial lining. Because the body has no way to expel the fibers, the persistent irritation leads to lesions, which in turn lead to cancer.

Pneumoconiosis, the second category of occupational lung diseases, is an interstitial disease, a classic example of which is pulmonary fibrosis. Interstitial diseases affect the walls of the air sacs inside the lungs, rather than the pleural lining over the lungs, and result in scarring. This, in turn, limits a lung's ability to expand properly. Medication can occasionally slow the progress of pneumoconiosis, but many individuals, once affected, never regain the full use of their lungs, and lung transplants are the only option.

Asbestosis is a breathing disorder specifically caused by inhaling asbestos fibers, and is usually a cumulative effect, arising after years of exposure. The fibers cause lung scarring, which can gradually restrict breathing to such an extent that patients are unable to walk more than a few feet without stopping, and require constant oxygen. The symptoms, which can range from mild to severe depending on exposure and a person's general stamina, commonly don't appear until years after exposure to asbestos fibers.

The Duke, UNR study demonstrated a statistical risk across the entire spectrum of 2 to 3 percent higher for each year asbestos fibers were inhaled - figures which were more consistent among white males than for any other group surveyed. The second at-risk category was white females, and both groups scored higher in the risk assessment categories than black males, presumably because the latter group saw fewer smokers and workers who occupied different regions of the asbestos textile plants, namely preparation and carding operations, where fibers were shorter than in the spinning and twisting sections where white males generally worked, according to transmission electron microscopy, or TEM, analyses.

U.S. Environmental Protection Agency regulations (limiting asbestos to 1 percent of product by weight or volume) have driven the asbestos textile industry overseas. This is good news for American workers, but not so good for workers in places like Korea and Egypt, for example.

Attempts by the United Nations to add asbestos to the list of hazardous substances already on the Rotterdam Convention have been consistently opposed by Canada, which is the world's largest supplier of chrysotile asbestos.

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Japanese Court Awards Compensation To Former Military Base Employee

A district court has awarded 76 million yen (approx. 800,000 dollars) to the family of a former US naval base employee who died of lung cancer after being exposed to asbestos.

Hitoshi Taimi worked at the United States naval base in Yokosuka for 18 years and during that time he was exposed to asbestos while performing work on air conditioning and ventilation systems.

In April 2006, 11 years after he last worked on the base, Taimi was diagnosed with lung cancer and proceeded to file a lawsuit the next year. Sadly he passed away 10 days later at age 51.

Two years later a district court ruled that the Japanese government was liable for his death because it manages the hiring of base workers and knew about the dangers of asbestos exposure but failed to take appropriate safety measures.

Japan's defense ministry has not indicated whether it plans to appeal the verdict but if the decision stands, it will set an interesting precedent for future lawsuits.

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Public Libraries Around Nation Facing Asbestos Remediation

As the nation's public libraries age, they - like schools - face updates that result in closures, often because older buildings like schools and libraries contain significant amounts of asbestos that represent a threat to public health.

Asbestos, a fibrous mineral widely used in insulation, floor and roofing tiles, tile glues, and some ceiling panels up to the 1970s, when U.S. health officials began to recognize its dangers, is the most common cause of certain illnesses, namely asbestosis - a severe, debilitating respiratory disease - lung and digestive system cancers, and mesothelioma.

Mesothelioma is a particularly lethal form of cancer that commonly lies dormant for several decades before producing enough symptoms to allow for diagnosis. When finally diagnosed, however, most patients are given about a year to live. Fewer than 10 percent live five years, even with second generation chemotherapy agents like Alimta, combination therapies, and radical surgery to remove tumors.

The Wilson Library in Bellingham, Washington - which was closed for asbestos remediation and remodeling recently - was reopened and then closed again from approximately 8:45 a.m. to 9:25 a.m, Pacific time, Friday morning due to an error in the ventilation system's automatic programming.

The remediation and remodeling was scheduled to be completed on Thursday, and the ventilation system automatically set to run again on Friday morning.

Unfortunately, the project was not completed on time, but the ventilation system went on again regardless.

Students and library employees were evacuated as soon as the error was realized, about 8:45, and allowed to return about an hour later, after air quality tests were conducted to insure that the library's air was free of asbestos particles.

The Wilson Library, as part of Western Washington University (WWU), falls under the U.S. Environmental Protection Agency's (EPAs) Asbestos Hazard Emergency Response Act (AHERA) guidelines in terms of asbestos management, so students, faculty and staff were sent e-mails informing them of the nature of the event and the reasons behind the closure and re-opening.

AHERA guidelines mandate that all schools, whether public private or denominational, inspect for asbestos; create an asbestos hazard plan; provide yearly information on asbestos hazards and the plan; inform of any abatement actions that take place (or are planned); designate a contact/liaison person to manage the asbestos plan; and provide custodial staff with asbestos-awareness training.

Western Washington University's Director of Environmental Health and Safety, Gayle Shipley, and WWU staff acted in accordance with the university's AHERA planning by advising of the action taken; i.e., the 8:45 closure, but clearly one step in the process was missed or the ventilation system would not have come back on when it did, and this may be why the EPA strongly recommends its six-step plan to insure that at least one individual is cognizant of all phases of asbestos remediation, monitoring and information dissemination.

That more libraries, both public and collegiate, will face asbestos remediation of some kind in the near future is a given. In Minnesota, the Waseca Public Library is getting ready to close from July 30 to August 23 to enable workers to remove old asbestos tiles and replace them with carpeting. And in Minneapolis, the historic Southeast Library - designed by renowned Minnesota modernist architect Ralph Rapson in 1964 - was closed in 2006 as part of budget reorganization but now faces reopening thanks to the Minneapolis/Hennepin County Library systems merger.

Southeast Library will admittedly need asbestos abatement and a new roof, but its demolition (which was discouraged by historians who appealed to the City of Minneapolis Heritage Preservation Commission and the City Council to designate the building as an historic landmark) has been avoided.

According to one study, it is as costly and time-consuming to demolish a building with asbestos and remove the debris to an approved landfill as it is to perform asbestos remediation and return the structure to use. This is primarily because asbestos abatement has to take place even where demolition is planned, and because hazardous waste landfills are becoming increasingly crowded, leading to higher and higher costs for dumping asbestos debris.

n fact, the real cost of restoring, reusing and re-purposing older buildings lies in renovation and retrofitting, not in asbestos remediation.

Sources: KEYC, Minnesota Independent, The Western Front, Preservation Alliance of Minnesota

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