Inorganic lead compounds are used most widely in paint and pigment industries. Because of exposure to lead dust in workers in a copying center, we compared blood lead levels in these workers to normal individuals and investigated the relationship between job tenures of the workers and their blood lead levels. This survey was performed on 20 simple workers in a copying center of Tehran Univ...

Background: The workers of mines, during a working day, are exposed to stress and psychological pressure that certainly affect the efficiency of their work. This study aimed to determine the level of stress, anxiety, and depression in workers of one copper mine in Kerman Province, Iran. Materials and Methods: In this cross-sectional study, 250 workers of the operation unit of one copper mine...

This paper addresses an economical, supple, continuous monitoring system of underground mine workers’ protection and security. A module of MEMS based sensors are used for monitoring underground parameters as per the requirement of the user and automating sequence of measuring data through digital wireless communication system is projected with high precision, soft control and reliability. A mic...

hydrographically bolivian poopó lake is located in the basin of desaguadero river and it has over a dozen main tributary rivers and other smaller rivers with lower flow. the mine water discharge from the abandoned and current mining activities polluted these rivers by carrying heavy metals, dissolved and suspended solids which in turn polluted the poopó lake which is considered as an important ...

soil contamination in the vicinity of the abandoned lakan lead and zinc mine was studied. the results showed that over the past decades, the environmental pollution was caused by lead, zinc tailings dam and acid mine drainage. the average of lead, zinc, cadmium, copper and nickel is 1295, 4273, 27, 185 and 92 mg/kg, respectively in the soils of tailings dam. these metals were continuously dispe...

background the exposure to noxious agwents such as lead my cause lung disorders. objectives in the present study, pulmonary function tests and self-reported respiratory symptoms in lead exposure workers were compared with matched control subjects. materials and methods the frequency of respiratory symptoms were evaluated in a sample of 108 lead exposure workers and 100 control subjects with sim...

The history of research into individual liability to accidents is long and troubled (Iverson and Erwin1997). Some researchers studied the distribution and risk of accidents, and concluded that various groups of individuals displayed differences in susceptibility to accidents (Peters1989; Bhattacherjee1991). Other investigators sought to characterize the accident-prone individuals either by comp...