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Hazards associated with the most dangerous type of mining, subsurface mining, include explosions, fire, tunnel collapse, inhalation of toxic fumes, and respiratory disease.

a) True
b) False

Answer :

Final answer:

The assertion that subsurface mining involves significant hazards, including explosions, fires, tunnel collapses, and exposure to toxic fumes that can lead to respiratory diseases, is true. These dangers pose serious risks to miners' health and safety as well as the environment. The correct option is A.

Explanation:

The statement that hazards associated with the most dangerous type of mining, subsurface mining, include: explosions, fire, tunnel collapse, inhalation of toxic fumes and respiratory disease, is true. Subsurface mining, also known as deep or underground mining, is characterized by the creation of tunnels and shafts deep beneath the Earth's surface to extract minerals.

This method poses multiple hazards, such as the risk of mine collapse due to the instability of underground tunnels, which can lead to surface subsidence and entrapment of miners. Fire outbreaks and explosions are significant dangers due to the potential presence of flammable gases like methane.

Inhaling toxic fumes, often found in underground mining environments, can contribute to acute poisoning and chronic respiratory conditions, including black lung disease (pneumoconiosis) among miners exposed to coal dust over extended periods.

Finally, the environmental implications of subsurface mining, such as water pollution from leached tailings and altered landscapes, significantly impact surrounding ecosystems and human health.

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