Thorium is often found in the tungsten rods used for electric arc welding. By weight, the rods are typically 2% thorium. An average rod therefore contains something like 30 microcuries of thorium. The thorium is added for several reasons, one being to increase the alternating current carrying capacity and to reduce electrode erosion.
A recent study has determined that some welders could possibly get Parkinson’s Disease 15 years earlier than those that are in the general population. Scientists are finding that fumes produced from using welding rods can be dangerous. The fumes can cause serious damage to the lungs and general overall health.
Brain cells can be harmed by the toxin Manganese, and it should be a concern for welders. Welding rods contain manganese, which vaporizes during the welding process and can then be inhaled by the welder.
A jury recently awarded $1 million to a man claiming his Parkinson's disease was caused by years of exposure to welding fumes. Parkinson’s or Parkinsonism is a neurological disorder with physical symptoms that increase with time. Symptoms and signs of Parkinson’s disease include tremors, disorientation, memory loss, fatigue, headache, muscle cramps, loss of appetite, apathy, insomnia, weakness, speech disturbances, impairment of judgment, anxiety, hallucinations or delusions, stiffness in arms and legs, and loss of muscular control.
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