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When Was It Discovered That Asbestos Was Dangerous?

1858

1858


Birth of Asbestos in U.S. Industry

The Johns Company began mining fibrous anthophyllite in 1858 for use as asbestos insulation at the Ward’s Hill quarry in Staten Island, New York. The Industrial Revolution saw a marked increase in asbestos production and use in North America, with the first commercial asbestos mine opening in 1874 in Quebec.


1918

1918


U.S. Government Recognizes Asbestos Risk

The U.S. Bureau of Labor Statistics releases a report that reveals abnormally high risk of early death among asbestos workers.


1930

1930

Dr. E.R.A. Merewether, a famous researcher, publishes first clinical examination of hundreds of workers in the asbestos industry. He found that one out of four workers was suffering from asbestosis.

Dr. Merewether further concluded:

  • That asbestosis was a disease of latency, i.e. that workers exposed to asbestos wouldn’t show signs of injury for many years;
  • That asbestos dust had to be controlled through ventilation and the use of respirators.
  • That workers exposed to asbestos should be informed and warned in order to assure a “sane appreciation of the risk.”
  • That the finished products created dust that should be controlled and minimized.

Dr. Merewether’s medical description of asbestos disease mirrors exactly the description of the disease today. His recommendations, if fully implemented by the asbestos industry, would have saved tens of thousands of lives and injuries to American workers.


1930

1930


Industry Regulations on UK Asbestos Factories

Dr. Merewether and his research partner, Dr. C.W. Price, published a report demonstrating that asbestosis was occurring in workers with as little as nine months of exposure. Thanks to their discoveries, industry regulations were placed on British asbestos factories to protect workers who were exposed to the material. However, the regulations did not apply to workers in other industries who installed or handled asbestos as part of their job.


1933

1933


Asbestosis First Reported in America

The first report of asbestosis in an American insulation worker came in 1933, though it is speculated that the disease had simply been misdiagnosed as tuberculosis or other pulmonary diseases before then. The Metropolitan Life Insurance Co. found asbestosis in 29 percent of workers in a Johns-Manville asbestos factory, leading to settlements in lawsuits filed by 11 sick employees.


1934

1934


Link Between Workplace Asbestos Exposure and Cancer Discovered

Researchers report cases of asbestosis and lung cancer in an asbestos factory. Many of the workers had less than six months of exposure to asbestos. Reports were also published of asbestosis from workplace exposure to products, including boiler workers, custodians and insulators.


1942

1942


Warnings of Cancer Risk From Asbestos Exposure

Researchers report that lung cancer in building trades workers is likely caused by asbestos. Dr. W.C. Heuper, a noted occupational physician and the first chief of the environmental cancer section of the National Cancer Institute, suggests that asbestos causes Asbestosis as well as cancer in the manufacturing process as well as through finished building products such as insulation and packing materials. In 1949, Dr. Heuper warns that asbestos was a cancer risk to the general population. By this time there were over 200 references in the widely available literature regarding asbestos and disease.


1943

1943


First Mesothelioma-Like Tumor Reported

The first case of a mesothelioma-like tumor is reported by Dr. Welder in a German study.


1947

1947


More Links Between Asbestosis and Lung Cancer Established

Dr. Merewether finds that 13% of asbestosis cases also had cancer of the lungs or pleura.


1949

1949


Mainstream Acceptance of Harm Caused by Asbestos

Encyclopedia Britannica lists asbestos as a recognized cause of occupational and environmental cancer. The Journal of the American Medical Association concludes that asbestos is probably linked to occupational cancer.


1953

1953


Mesothelioma Found in Asbestos Workers

Mesothelioma is reported in an asbestos insulator worker.


1955

1955


Major Study on Link Between Asbestos and Cancer

A major epidemiological study demonstrates that asbestos workers have a tenfold risk above the general population of contracting lung cancer.


1960

1960


Link Between Asbestos Exposure and Mesothelioma Strengthened

Another epidemiological study confirms reports that exposure to asbestos causes mesothelioma. This study also included the children and wives of asbestos workers who contracted the disease.


1960

1960


Asbestos Industry Ignores Warnings of Health Risks

The medical literature continued to identify asbestos as a major carcinogen and environmental hazard, with over 200 publications describing the hazards of asbestos by the end of the 1960s. Notwithstanding this knowledge, and the death that resulted from breathing in the dust from these products, the manufacturers and installers of these materials continued to sell and install asbestos products without warning workers, reducing the dust or substituting equally effective materials in place of the asbestos. Tragically, many companies had secured additional knowledge regarding the connection between asbestos and cancer as early as the 1930s. However, these companies altered research reports to hide these findings from the public.


1964

1964


Widespread Disease Found Among Asbestos Workers

Dr. Selikoff, a major researcher at Mt. Sinai Hospital in New York, confirms widespread disease among asbestos workers and from family members living with asbestos workers. A large number of job titles were implicated in the report, including construction workers, electricians, plumbers, carpenters, etc. Dr. Selikoff pointed out that asbestos did not “respect” job titles and could harm any person who breathed in asbestos.


1967

1967


First Successful Personal Injury Claim in UK

A British victim of asbestos exposure in the UK filed a successful personal injury claim in 1967, which was upheld by an appeals court in 1971. The case paved the way for more claims of negligent asbestos exposure by victims suffering from mesothelioma, asbestosis and other related diseases.


1969

1969


Asbestos Regulations Revamped

The Asbestos Regulations of 1969 updated the UK’s outdated 1931 Industry Regulations, and regulated asbestos beyond just the manufacturing process to include every industry which used or contained asbestos. The regulations required the use of exhaust ventilation, protective equipment and improved handling procedures to limit exposure to asbestos dust. However, these regulations still did not fully eliminate the causes of of asbestos-related diseases.


1970

1970


Clear Air Act Approved by Congress

Congress passes the Clean Air Act, allowing the Environmental Protection Agency to regulate asbestos as a hazardous air pollutant.


1971

1971


First Successful Personal Asbestos Injury Claim in US

A federal court issues a verdict of $68,000 against asbestos makers to a worker suffering from asbestosis, the first such decision in the United States to be upheld on appeal in Borel v. Fibreboard Paper Prod. Corp., 493 F.2d 1076 (5th Cir. 1973)


1972-1974

1972-1974


Increased Federal Regulation of Asbestos

In the U.S., the Occupational Safety and Health Administration sets some limited workplace exposure limits for asbestos, and improves these regulations two years later. Meanwhile, the EPA bans spray-on asbestos insulation as a hazardous material. In the UK, the Health & Safety at Work Act requires employers to limit their employees’ exposure to health risks, and provide workplace information to the public about anything which affects health and safety.

 

Published: - Updated: Aug 25, 2017