Related Experiment Video
Updated: May 17, 2026

A Silicosis Mouse Model Established by Repeated Inhalation of Crystalline Silica Dust
Published on: January 6, 2023
Quartz exposure and increased respiratory symptoms among coal mine workers in Tanzania
Unlabelled:
Quartz has been an inevitable composition of different type of coal mined. The quartz exposures among coalmine workers has been attributed to activities such as cutting the adjacent rock, the roof, the floor and the intrusions.
Objective:
The aim of the study is to determine the associations between quartz exposures and respiratory health in a labour intensive coal mine.
Methods:
239 randomly selected men participated in the study. A respiratory questionnaire was used, collected information and data were analysed by SPSS version 15. The criterion for significant association was 0.05 and below.
Results:
Logistic regression controlling for age, smoking status and duration of employment showed a significantly increased odds ratio for breathlessness in the high exposed group (OR = 3.9 (95%CI: 1.4, 10.7). In addition there were significantly increased odds ratio in the highest cumulative quartz group for cough day and night (OR: 3.6), cough for four days or more in a week (OR: 6.7), cough with sputum in day and night (OR: 6.5) and dyspnoea (OR: 10.9) (Table 4).
Conclusion:
The results from this study provide important information for targeting prevention program for reducing exposure at mine workplace. Improvements in the work environment where exposures are higher than the TLV for respirable silica, ought to be performed.
More Related Videos
Related Concept Videos
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Other Pulmonary Disorders
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Asthma III: Clinical Manifestations
Physical Assessment of the Respiratory Tract I: Health History
Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and key...

