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Clinical and radiographic study of activated carbon workers.
  1. C G Uragoda
  1. Central Chest Clinic, Colombo, Sri Lanka.

    Abstract

    Activated carbon is made in Sri Lanka by passing steam through charcoal made from coconut shells. The carbon does not contain free silica. Sixty six men who had worked in a factory making activated carbon for an average of 7.2 years had no more respiratory symptoms than a control group, and none showed radiological evidence of pneumoconiosis. There was no evidence that people exposed to charcoal and pure carbon for up to 11 years are at risk of developing pneumoconiosis.

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