Instrumentation for measuring the magnetic lung contamination of steel welders

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      <subfield code="a">A technique, with the instrumentation required, is described that allows the routine mapping of magnetic lung contamination in vivo. The instrumentation consists of a patient chair which moves during the mapping between two fluxgate transducers and two magnetizing coils producing a magnetic field to magnetize the lung constaminants and a minicomputer for control, calculations and reporting. Measurements of lung contamination among mild steel and stainless steel welders are reported</subfield>
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