CMSP Safety, Health & Risk Management 4

Question 1

Under MSHA Part 48, what is the minimum annual refresher training required for experienced miners?

Accepted Answer

8 hours

Answer

30 CFR Part 48 requires that all miners receive a minimum of 8 hours of annual refresher training regardless of their experience level.

Question 2

Which of the following is an example of an engineering control for managing dust exposure in an underground coal mine?

Accepted Answer

Installing a water sprayer system on the continuous miner's cutting head

Answer

Water spray systems mounted on cutting equipment suppress dust at the source, an engineering control that reduces dust generation rather than relying on behavior or PPE.

Question 3

A CMSP candidate is reviewing an incident rate calculation. Which formula correctly computes the OSHA Total Recordable Incident Rate (TRIR)?

Accepted Answer

(Number of incidents × 200,000) ÷ Total hours worked

Answer

TRIR = (Number of recordable incidents × 200,000) ÷ Total hours worked, where 200,000 represents the base for 100 full-time employees working 50 weeks × 40 hours.

Question 4

What condition must exist before a miner can exercise the right to refuse work under Section 103(g) of the Mine Act?

Accepted Answer

A condition that could reasonably be expected to cause death or serious physical harm

Answer

Section 107(a) of the Mine Act allows miners to withdraw from imminent danger areas — conditions where there is a reasonable expectation of death or serious physical harm before the hazard can be eliminated.

Question 5

Which gas is most commonly associated with asphyxiation hazards in confined spaces and abandoned mine areas due to its colorless, odorless nature and displacement of oxygen?

Accepted Answer

Carbon dioxide

Answer

Carbon dioxide (CO₂) is heavier than air, colorless, odorless, and displaces oxygen in low-lying areas and enclosed spaces, causing asphyxiation without warning.

(CMSP) Certified Mine Safety Professional Practice Test

(CMSP) Certified Mine Safety Professional Practice Test

CMSP Safety, Health & Risk Management 4