Because of its small and fibrous nature, raw asbestos can be spun and woven into textile cloths and garments. This makes them resistant to high temperatures, flames, electrical fires and corrosive substances. But they are not indestructible - they can be sliced, cut or torn.
Years Produced: 1884 – 1980s
The fireproofing capabilities of asbestos also made it an ideal material to use in protective clothing such as protective jackets for firefighters and aprons and mitts for foundry workers. Weaving asbestos fibers along with other fibers also improved the tensile strength of textile products.
While the use of asbestos in cloth can be traced back as far as 2500 B.C., it wasn’t until the late 1800s that it was commercially produced in the United States. One of the first companies to produce asbestos textiles was Johns Manville, which began manufacturing the cloth in 1884. As demand for the material rose – and because asbestos was spun in a similar method to cotton – several textile mills that were built to process cotton were converted to asbestos textile factories in the early 1900s.
Asbestos fibers of different grades were mixed in a fiber blender according to specifications of the intended product. The fibers are then combed into a fiber mat. The mat is pressed and layered into an arrangement of fiber mats called a lap. Thin ribbons, called roving, are made from the lap. At this stage, other fibers like cotton or rayon can be added. The roving is further spun and twisted to form yarn. Yarn can then produce thread. Thread can be used to make fabric for garments, rope, wicking or even tape.
In the United States, the Carolinas were particularly instrumental in the industry. There were large deposits of naturally occurring asbestos in both states, and textile mills were established in former cotton mills near the mines. One such textile plant was the Southern Asbestos Manufacturing Company mill in Charlotte, North Carolina. In 1920, the company purchased a cotton mill and converted it into an asbestos mill, producing yarn and cloth. In just two years, the company’s profits more than tripled.
The use of asbestos in manufacturing cloth and garments declined due to the toxic nature of the mineral. Now, many different heat-resistant materials are used in the manufacturing of textiles and protective garments.
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When asbestos textile cloth and protective clothing become worn, the toxic fibers woven into the fabric are released into the air. Asbestos cloth can be made from as much as 100 percent asbestos. If used in garments, the percentage can vary. Garments meant to be worn in extreme temperatures will have a higher percentage. While these garments are not generally friable, when they are damaged they can become friable. Asbestos cloth in its raw form is considered friable, especially if it was used as thermal insulation.
Workers in foundries, glassworks and steel plants often wore these garments to protect them from extreme temperatures and from burns while working with molten materials. Protective garments often consisted of coats, gloves, leggings and aprons. Employees who worked with furnaces and stood along the paths where molten metal flowed wore asbestos coats and leggings during the casting process.
An analysis of the air quality in these plants and factories found that during the course of the work day, asbestos clothing regularly emitted fibers and exposed workers. If the clothing was not in good condition, there was a greater chance that the fiber count would be excessive. In regular use, clothing can become worn or cut by pieces of sharp metal or machinery in these plants and release extra fibers. Firefighters also used these jackets and gloves to protect them from fire and extreme heat. Uniforms are often exposed to extreme temperatures and wear and tear.
However, the occupation at greatest risk from these products was the textile mill worker. The extremely dusty conditions from milling and spinning raw asbestos contributed to high levels of lung disease in these workers. In fact, one of the first health claims of asbestosis was filed in 1927 by a textile mill worker.
Average consumers were also at risk from asbestos cloth and garment products since it was used in home goods like ironing boards and oven mitts.
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In Greenleaf v. Garlock et al., the jury ruled in favor of the plaintiff Charles Greenleaf and awarded $250,000 to Mr. Greenleaf’s estate and $1.6 million for loss of consortium to the plaintiff’s wife, Naomi Greenleaf. The plaintiff worked as a shipfitter and alleged that he developed mesothelioma from exposure from several materials including asbestos cloth and rope used in ships. The suit was filed against several manufacturers, including Johns Manville, Uniroyal and Garlock that were known for producing products made from asbestos textiles.
In another case, a shipyard storeroom worker named George Skleres filed suit against Raymark Industries, the manufacturer of Raybestos brand asbestos cloth. Mr. Skleres worked as a storeroom man from 1964 to 1982. He would routinely cut pieces of the cloth for orders. When the cloth was cut, he inhaled the dust. Many years later, he developed mesothelioma.
Matt Mauney is an award-winning journalist with nearly a decade of professional writing experience. He joined Asbestos.com in 2016, and he spends much of his time reading, analyzing and reporting on mesothelioma research articles to ensure people in the mesothelioma community know the latest medical advancements. Prior to joining Asbestos.com, Matt was a reporter at the Orlando Sentinel. Matt also edits some of the pages on the website. He also holds a certificate in health writing from the Centers for Disease Control and Prevention. Read More