Tungsten and humans(4)

Tungsten and humans

This parenchymal disease (fibrosing alveolitis) was only observed to occur among hardmetal (cemented carbide) and diamond workers, the clinical presentation of which may vary from subacute alveolitis to progressive fibrosis. Although at first WC was thought to be responsible, and later Co, now it is evident that only the presence of both hardmetal components induces hardmetal disease, characterized in the early stages by the presence of bizarre, multinucleated giant cells in the lung interstitium, alveolar lumen, and the broncho alveolar lavage. In contrast, parenchymal toxicity could never be observed when exposure was to Co alone WC alone or WC alone. Moreover, an increased risk of lung cancer was found in hardmetal workers.

Tungsten chain is tough, scratch resistant and durable, due to the characteristics of tungsten