The dangers of asbestos exposure covered up by major U.S. companies for decades

Founded in 1858 by Henry Ward Johns and C.B. Manville, the company became a world leader in the sales of asbestos products during the 1940s. Nowadays, we have access to multiple documents demonstrating Johns Manville's perpetual efforts to conceal the dangers of exposure to asbestos, most of which have been discovered following various investigations conducted for asbestos lawsuits.

• In 1945, Metropolitan Life Insurance Company, which helped numerous asbestos companies in the U.S. cover up the effects of exposure, succeeded in blocking a safety inspection at Johns Manville. MetLife convinced government officials that asbestos exposure was under control, although the insurance company was aware of the hazards of asbestos - a previous series of reports sponsored by Johns Manville revealed that over 20% of workers were suffering from asbestosis. MetLife was well aware of this confidential information and agreed to keep it a secret, thus allowing Johns Manville to further endanger the lives of their employees.
• The sponsored research focused on evaluating the health risks of asbestos exposure was conducted by the Saranac Laboratory in New York throughout the mid-1930s. An unequivocal link between the toxic minerals and cancer was found, but the company executives instructed researchers not to publish the findings of the study, as their business would have otherwise been compromised. Thereby, all information alluding to the correlation between asbestos and cancer was subsequently erased from the reports.
• In 1949, Dr. Kenneth Smith, who was going to become the medical director of the company, informed Lewis H. Brown, Johns Manville's president, that the X-rays of seven asbestos mill workers showed clear signs of asbestosis. However, he callously advised Brown not to let the employees know about their condition, stating that "As long as the man is not disabled, it is felt that he should not be told of his condition so that he can live and work in peace, and the company can benefit from his many years of experience."

Raybestos-Manhattan, Inc. was founded in 1902 and became a leading company in the production of asbestos-containing textiles, brake linings, and other friction products during the 1920s.

The company also strived to hide the terrible effects of asbestos exposure from both its employees and the public by working closely with Johns Manville.

• Raybestos-Manhattan, Inc. funded the study conducted by the Saranac Laboratory as well and, similarly to Johns Manville, pursued the researchers and the publisher at Asbestos Magazine not to reveal the link between asbestos and pulmonary cancer.

• In 1932, Raybestos-Manhattan, Inc. and Johns Manville had Dr. Anthony Lanza, who worked for Metropolitan Life at the time, alter the results of his study on asbestos textile workers in order to downplay the non-negligible health effects of asbestos exposure. Thus, the discreditable sentence "It is possible for uncomplicated asbestosis to result fatally." was removed from the report.
• Undeniable evidence that the company's executive, Sumner Simpson, played a crucial role in covering up the hazards of asbestos is contained within a series of documents known as The Sumner Simpson Papers. One eloquent example in this respect can be found in a letter from 1935 to Vandiver Brown, Johns Manville's lawyer. The president of Raybestos-Manhattan, Inc. wrote: "The less said about asbestos, the better off we are."

Bendix Corporation, established in 1924 by Vincent Bendix, has been manufacturing asbestos-containing friction materials for automobiles ever since, well aware of the serious health implications of these carcinogenic minerals, and continued to do so until 1997. In 1966, Ernie Martin, the company's director of purchases, showed a report predicting that undesirable government regulations would be soon enforced due to the risks associated with asbestos exposure to Noel Hendry, a sales manager at Johns Manville.

The latter responded "I suppose we have to bear with people who have nothing better to do than creating alarm, but we are not alarmed, and we live and sleep with the stuff.", although incredible asbestos levels of up to 720 fibers per cubic centimeter of air had previously been detected in Johns Manville's mines and mills throughout Canada.

Nevertheless, the most representative example of Ernie Martin's utmost indifference towards the health of Bendix Corporation's employees is contained within a 1966 letter to Johns Manville. Referring to the escalating asbestos epidemic in the U.S., the director of purchases offered what he considered to be the perfect solution, writing "My answer to the problem is: if you have enjoyed a good life while working with asbestos products why not die from it. There's got to be some cause."

It didn't take long for asbestos to cause health damage to those who worked with it. Since the early 1900s, researchers began to notice the prevalence of lung problems, and even deaths, that were present among residents in towns that mined asbestos.

W.R. Grace, also known as W.R. Grace & Co., conspired for decades to hide the dangers posed by asbestos at its vermiculite mine near Libby, a city in northwestern Montana. Evidence has found that when W.R. Grace acquired the Libby mines, they were well-aware that the asbestos-tainted vermiculate products they were profiting from were endangering the lives of mineworkers, customers, and residents of Libby and the surrounding communities.

As a result of the asbestos-containing products produced, the company was responsible for environmental pollution and the exposure of thousands of townspeople that have been diagnosed with life-threatening conditions.

As of November 2018, the EPA completed cleaning up more than 2,600 properties within Libby as well as Troy and about 7,600 properties had been investigated within the Superfund site. EPA also completed cleanup projects at the former vermiculite processing plants, as well as at all schools and parks in town. Over one million cubic yards of asbestos-containing waste was successfully removed hitherto by virtue of the federal agency's ongoing endeavors.

An estimated 400 people have died of their exposure to tremolite asbestos dust, but health officials suspect the number to be much higher. For years, the hospital was controlled by W.R. Grace, the company that owned the mine, and toxic exposure never appeared on a death certificate in Libby.

In 1925, National Gypsum began manufacturing an innovative form of wallboard, and then expanded its product line to include various other construction products, many of which included asbestos. As a result, their employees and consumers faced asbestos exposure and a series of asbestos-related illnesses.

Despite all internal documents acknowledging the medical literature on the effects of asbestos, most companies, including National Gypsum Co., profiting from its use continued to expose workers and the public to it for decades. In 1958, an inter-office memo from the National Gypsum Co. said, "we know that you will never lose sight of the fact that perhaps the greatest hazard in your plant is with men handling asbestos. Because just as certain as death and taxes is the fact that if you inhale asbestos dust you get asbestosis".

By using asbestos in the recipe for so many products, the largest American-owned producer of gypsum board put a lot of workers at risk for later health problems. Workers in the National Gypsum facilities that made the products were put at risk because they were around asbestos, and many even handled it.

The internal memos from asbestos manufacturers revealed during the initial onslaught of lawsuits eventually forced many asbestos companies into bankruptcy.