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Chapter 25
Question 1 of 2
What triggers the explosion in Number One mine?
A
An overloaded powder charge set by a careless miner
B
A lightning strike on the surface
C
Deliberate sabotage by a union agitator
D
A young "spragger" boy mishandles a car, which derails and knocks loose timbers and coal dust that ignites from a sparking wire
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