Heavy metal detoxification wide variety of applications. Occupational exposure most often occurs in mining, extraction, and in the processing of alloy metals containing beryllium. Beryllium causes lung and skin disease in 2 to 10 percent of exposed workers. Cadmium is an extremely toxic metal commonly found in industrial workplaces, particularly where any ore is being processed or smelted. Several deaths from acute exposure have occurred among welders who have unsuspectingly welded on cadmium-containing alloys or with silver solders. Forms of hexavalent chromium can be toxic. Calcium chromate, chromium trioxide, lead chromate, strontium chromate, and zinc chromate are known human carcinogens. An increase in
Metal and Machinery Workers Industrial Union Reuther Library in Detroit. Metal and Machinery Workers Industrial Union The Metal and Machinery Workers Industrial Union No. 440 (MMWIU) was a labor union in the United States which existed between 1907 and 1950. It organized workers in the manufacturing industry and was affiliated with the Industrial Workers of the World (IWW). The earliest recorded local of the MMWIU was in Bridgeport, Connecticut in 1907. A number of machinists' locals were also active under the IWW around that time, which dated from a period when a large number of craft union locals were switching their affiliation to the IWW, and