The majority of blacksmiths tend to work in a more artisanal setting than in the past. Today they produce ornamental pieces and artwork rather than create tools, the traditional role of a blacksmith. In spite of this change, the blacksmithing process is still the same.
That process starts with metal being heated in a forge so that it will become soft. When the metal glows, blacksmiths pick it up with tongs and place it on an anvil to mold and shape into the desired configuration using a pressure hammer and presses. The metal may be returned to the forge during the shaping process to reheat it so it remains pliable. After the basic shape is achieved, the blacksmith uses smaller hammers and chisels to create the finished product.
Hardening the finished item involves heating it in the forge to a high temperature – from 500 degrees Fahrenheit to more than 1300 degrees Fahrenheit – and then soaking it in a cold water bath. The next step is known as tempering, or making the product less brittle. The item is returned to the forge and heated to a lower temperature, where it remains for a long period of time. When it is removed from the forge it is cooled at room temperature.
Blacksmiths were exposed to a number of products that were known to contain asbestos. Some of these products were not unique to blacksmithing, though some were. Both types included:
Older tools had asbestos in them and their use created a risk of releasing asbestos fibers into the air that could be inhaled. A blacksmith’s place of work often had floor and ceiling tiles as well as insulation, that when decayed would also release asbestos fibers. Blacksmiths also frequently wore asbestos gloves, another exposure point, to protect them from hot metals.
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In 1991, a group of researchers from the Division of Environmental and Occupational Medicine from Mount Sinai School of Medicine, the Department of Radiology from Mount Sinai Hospital, and the Pulmonary Division of Mount Sinai Medical Center conducted a study of 869 New York Metropolitan ironworkers, both structural and ornamental (blacksmiths).
Findings of the study were based on:
Of the participants, 329 had pleural abnormalities on their chest X-rays that were caused by asbestos exposure. Ex-smokers had the highest amount of abnormalities. Further analyses showed that the duration of employment was the most significant factor determining how extensive the abnormalities were for each individual.
In June 2012, two former BNSF Railway employees sued the company, alleging they developed asbestos-related diseases through occupational exposure at the railroad. William Schleicher worked as a blacksmith and Frank Cox as a boilermaker at the O Street yards. Schleicher started work in 1943 and Cox started in 1968.
In their asbestos lawsuit, Schleicher and Cox claimed they were required to work around asbestos-containing materials, which violated federal law that says employees must be given a safe place to work. In a court response, BNSF denied responsibility, and blamed the lack of scientific knowledge about the dangers of asbestos at the time the negligence allegedly occurred. The company also blamed the carelessness, recklessness and negligence of the plaintiffs who didn’t take responsibility for their own health. This case is not yet resolved.
Foseco Inc. made asbestos-containing heat-resistant products used in foundries where blacksmiths were employed. One of these was a hot top that was used to keep molten steel at the right temperature to be molded.
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.
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