CMSP CMSP Occupational Health & Industrial Hygiene 3

Question 1

Whole-body vibration (WBV) in mining is primarily associated with which type of equipment operation?

Accepted Answer

Haulage vehicles, scoops, and load-haul-dump (LHD) units

Answer

Operators of mobile haulage and LHD equipment experience significant WBV transmitted through the seat, which over time can cause musculoskeletal disorders.

Question 2

Under MSHA's mandatory medical surveillance requirements for dust-exposed miners, chest X-ray examinations must be offered:

Accepted Answer

Initially and at periodic intervals based on years of dust exposure

Answer

MSHA requires chest X-rays at specified intervals tied to the miner's duration of exposure to coal dust to enable early detection of pneumoconiosis.

Question 3

What is the IDLH (Immediately Dangerous to Life or Health) concentration for hydrogen sulfide (H₂S)?

Accepted Answer

100 ppm

Answer

NIOSH establishes the IDLH for H₂S at 100 ppm, the concentration above which escape without respiratory protection becomes impaired or life-threatening.

Question 4

Which of the following is a key component of an effective hearing conservation program (HCP) in mining?

Accepted Answer

Annual audiometric testing for noise-exposed miners

Answer

Annual audiometric testing is a core HCP element required by MSHA to detect early signs of NIHL and trigger further protective measures.

Question 5

In industrial hygiene risk assessment, the 'anticipation' step involves:

Accepted Answer

Identifying potential hazards before operations begin or change

Answer

Anticipation is the proactive step of recognizing potential hazards in advance of work activities, enabling preventive controls to be designed in from the start.

(CMSP) Certified Mine Safety Professional Practice Test

(CMSP) Certified Mine Safety Professional Practice Test

CMSP CMSP Occupational Health & Industrial Hygiene 3