Question
Discuss the ventilation and illumination requirements in underground works.
Answer :
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In underground construction works, proper ventilation is essential to ensure a safe and healthy working environment. Due to the confined nature of underground spaces, natural air circulation is often inadequate, leading to the accumulation of dust, toxic gases, and fumes from machinery or blasting operations. Mechanical ventilation systems are required to supply fresh air, dilute harmful substances, and maintain acceptable oxygen levels. The system
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