Background: Welding is the most common way of permanently joining metal parts. Welders use many types of welding equipment set up in a variety of positions. Arc welding is the most common type. Welding, soldering, and brazing workers often are exposed to a number of hazards, including the intense light created by the arc, poisonous
fumes, and very hot materials.Objective: The aim of the present study was to investigate some of the health hazards among gas metal arc welders with special emphasis on renal and lung examination and to monitor the level of chromium in blood and urine, and studying its relation with the renal condition. Our aim was also to detect early renal affection by measuring of B2 microglobulin in urine. Subjects and methodology: This study was conducted in three welding shops in El Manial, and El Maadi, in Cairo. The study was accomplished during the months of October and November,2006.The studied group comprised 18 workers in the metal arc welding shops. They were adult men aged between 18-42 years (26.5 ±7.8), working on the basis of 12 hours/day with one day off per week. None of the workers used any protective
equipment during working hours. A referent group of 20 males matched for age that ranged from 21-41 yrs., (26.2±6.38), sex, socio-economic status, smoking