NIOSH recommends in this document that employee exposure to inorganic lead (7439921) in the workplace be kept to a maximum of hour workday, 40 hour workweek. Inorganic lead encompassed lead oxides, metallic lead, and lead salts, excluding lead-arsenate. Recommendations were listed for medical surveillance of workers, medical examinations, labeling of hazardous materials, personal protective equipment and work clothing, specific requirements for respirator usage, work clothing, instruction of employees regarding hazards, work practices, monitoring requirements, record keeping and reporting requirements. Exposure to lead may occur in the following occupations and industries: battery manufacturing industry, bookbinders, foundries, braziers, construction material manufacturing, cable makers, canneries, ceramic industry, dentistry, dyeing industry, electroplating, paint industry, farmers, glass manufacturing industry, refineries, chemical industry workers, smelters, metal workers, textiles industry workers, and fuel production workers. Humans exposed to lead have displayed a loss of appetite, metallic taste in the mouth, constipation, obstipation, anemia, pallor, malaise, weakness, insomnia, headache, nervous irritability, muscle and joint pains, fine tremors, encephalopathy, colic, peripheral and central nervous system malfunctions, nephropathy, and encephalopathy.