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Beginner ~5 min

Underground Coal Mining

This 20-question multiple-choice test simulates the type of questions found on state certification exams (e.g., West Virginia "Black Hat," Pennsylvania, or similar) for experienced underground coal miners

Progress: 0/20
Beginner • ~5 min
Q1. What is the primary purpose of ventilation in an underground coal mine?
Select one answer • 1 pt
Q2. Methane becomes explosive when its concentration in air is between:
Select one answer • 1 pt
Q3. At what methane concentration must electrical equipment be de-energized in the working place?
Select one answer • 1 pt
Q4. What is the most important initial action during an underground mine fire?
Select one answer • 1 pt
Q5. Roof bolts are primarily installed to:
Select one answer • 1 pt
Q6. How often must the mine's emergency response plan be reviewed and updated?
Select one answer • 1 pt
Q7. Explosives and detonators in underground coal mines must be stored:
Select one answer • 1 pt
Q8. During blasting, personnel must be withdrawn to a safe location at least:
Select one answer • 1 pt
Q9. Compressed gas cylinders underground must be:
Select one answer • 1 pt
Q10. What is blackdamp?
Select one answer • 1 pt
Q11. How often must MSHA conduct regular inspections at underground coal mines?
Select one answer • 1 pt
Q12. The purpose of rock dusting in underground coal mines is to:
Select one answer • 1 pt
Q13. Self-contained self-rescuers (SCSRs) must provide at least:
Select one answer • 1 pt
Q14. Who is responsible for conducting pre-shift examinations in underground coal mines?
Select one answer • 1 pt
Q15. Permissible equipment in gassy mines must be:
Select one answer • 1 pt
Q16. In room-and-pillar mining, pillars are left to:
Select one answer • 1 pt
Q17. What must be done if methane reaches 1.5% in the return air?
Select one answer • 1 pt
Q18. Lifelines in escapeways must be:
Select one answer • 1 pt
Q19. How far must fire extinguishers or waterlines be spaced along belt conveyors?
Select one answer • 1 pt
Q20. Apprentice (red hat) miners in many states must work under direct supervision for:
Select one answer • 1 pt
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