Chronic obstructive pulmonary disease (COPD) is caused by exposure to noxious particles
and gases. Smoking is the main risk factor, but other factors are also associated with COPD …

Occupational exposure is an important risk factor for chronic obstructive pulmonary disease
(COPD), and silica dust is one of the most important occupational respiratory toxins …

Chronic inhalation of coal dust can cause several lung disorders, including simple
coalworkers pneumoconiosis (CWP), progressive massive fibrosis (PMF), chronic bronchitis …

Susceptible workers exposed to coal mine and silica dust may develop a variety of
pulmonary diseases. The prime example is classical pneumoconiosis, a nodular interstitial …

OBJECTIVES To examine whether underground construction workers exposed to tunnelling
pollutants over a follow up period of 8 years have an increased risk of decline in lung …

Background: RESPIRATORY problem is one of the major health hazards in dust-exposed
workers, it is a major cause of morbidity and mortality all over the world. Objective: To …

Background The adverse health effects of silica are still a major concern in some industries.
The purpose of this study was to evaluate pulmonary function in a group of sub-radiological …

Objective: To assess high-resolution computed tomography (HRCT) findings in silicosis and
to better define the role of HRCT in early detection of parenchymal abnormalities in silica …

Study objectives To assess the effect of occupational silica exposure on pulmonary function.
Design Epidemiologic evaluation based on employee interview, plant walk-through, and …

Background Dusts containing crystalline silica are generated in mining, construction, glass,
granite and concrete production industries. The association between exposure to low levels …