CMSP CMSP Occupational Health & Industrial Hygiene

Question 1

What is the MSHA permissible exposure limit (PEL) for respirable coal mine dust for miners without pneumoconiosis?

Accepted Answer

2.0 mg/m³

Answer

1.0 mg/m³

Answer

0.5 mg/m³

Answer

5.0 mg/m³

Question 2

Coal workers' pneumoconiosis (CWP), commonly called 'black lung,' is caused by prolonged inhalation of:

Accepted Answer

Respirable coal and mixed mine dust

Answer

Silica dust only

Answer

Nitrogen dioxide fumes

Answer

Diesel particulate matter

Question 3

Which industrial hygiene sampling method is required by MSHA to assess a miner's personal exposure to respirable dust?

Accepted Answer

Personal breathing zone sampling using a personal dust monitor (PDM)

Answer

Area sampling with fixed monitors

Answer

Bulk dust sampling at the conveyor

Answer

Wipe sampling on surfaces

Question 4

What does the term 'threshold limit value – time weighted average' (TLV-TWA) represent?

Accepted Answer

The average airborne concentration to which workers may be exposed 8 hours/day, 40 hours/week without adverse effects

Answer

The maximum instantaneous exposure allowed

Answer

The short-term exposure limit for a 15-minute period

Answer

The immediately dangerous to life or health (IDLH) concentration

Question 5

Which of the following best describes the 'hierarchy of controls' approach to occupational health hazards in mining?

Accepted Answer

Elimination → substitution → engineering controls → administrative controls → PPE

Answer

PPE → engineering controls → administrative controls → elimination

Answer

Administrative controls → PPE → engineering controls → elimination

Answer

Engineering controls → substitution → elimination → PPE

Question 6

What health condition is associated with prolonged occupational exposure to crystalline silica dust in mining?

Accepted Answer

Silicosis

Answer

Asbestosis

Answer

Mesothelioma

Answer

Byssinosis