Question

In an underground coal mine a driller, wearing personal protective equipment, was going to workplace along the travelling roadway. A piece of rock fell down from the roof and hit the person on head causing serious injury. The cause of accident is

• A. Unsafe act of the driller
• B. Job stress
• C. Unsafe act and unsafe condition
• D. Unsafe condition

Hint:

Regular roof inspections and proper support systems are essential to prevent rockfall accidents in mines.

Answer 1

The Correct Option is D

The accident occurred because a piece of rock fell from the roof, which indicates a failure in roof support or stability—an unsafe condition in the mine’s travelling roadway. The driller was wearing personal protective equipment and was following the correct path to the workplace, so there was no unsafe act on their part (option 1). Job stress (option 2) is unrelated to the physical event of a rockfall. Option 3 (unsafe act and unsafe condition) implies the driller contributed to the accident, but there’s no evidence of that. The primary cause is the unsafe condition of the roof. Thus, the correct answer is Unsafe condition.