Sandra Ranson
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MC and T/F questions from 2012/2013 and 2013/2014

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Sandra Ranson
Created by Sandra Ranson over 6 years ago
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MINE462 Health and Safety

Question 1 of 42

1

Under the Ontario Occupational Health and Safety Act, an employer must supply their workers with safety boots and hard hats if the job requires it.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 42

1

A company with 250 employees had 6 LTIs last year. What is the LTIFR?

Select one of the following:

  • 2

  • 2.4

  • 3

  • 12

  • 15

Explanation

Question 3 of 42

1

The TLV-C or CEL can be exceeded...?

Select one of the following:

  • Once per day

  • Once per hour

  • Only for 15 minutes at a time

  • Never

Explanation

Question 4 of 42

1

A gold mine uses cyanidation as a part of the gold extraction process. What kind of wastewater conditions would you expect in the tailings?

Select one of the following:

  • Acid rock drainage

  • High pH water, free cyanide and cyanide compounds

  • Low pH water, dissolved metal ions

  • Suspended solids

Explanation

Question 5 of 42

1

Identify the substance that may create acute lung hazard conditions if found in high concentration in the air

Select one of the following:

  • Nitrogen gas

  • Radon gas

  • 95% relative humidity (saturated) air

  • Carbon monoxide

Explanation

Question 6 of 42

1

Hydrogen sulfide gas has a distinctive odor that is noticeable at high concentrations (>5%)

Select one of the following:

  • True
  • False

Explanation

Question 7 of 42

1

Radon has a half life of approx 4 days. How much of the original material of a radon sample will be left after 24 days?

Select one of the following:

  • 1/4

  • 1/16

  • 1/32

  • 1/64

  • 1/128

  • 1/256

Explanation

Question 8 of 42

1

Most common cause of workplace injury?

Select one of the following:

  • Struck by object

  • Slips and falls

  • Bending/climbing/twisting

  • Repetitive motion

  • Contact with hot objects

Explanation

Question 9 of 42

1

Which of the following is a confined space

Select one of the following:

  • Ball Mill

  • Pressure vessel

  • Mine drift

  • Refuge station

  • Ball mill AND Pressure vessel

  • Mine drift AND refuge station

Explanation

Question 10 of 42

1

Pale face + cool/moist skin + dizziness = ?

Select one of the following:

  • Heat exhaustion

  • Heat stroke

  • Heat syncope

  • Dehydration

Explanation

Question 11 of 42

1

Rights of the worker include?

Select one or more of the following:

  • Right to know about dangers in the workplace and what to do

  • Right to formulate a safety policy for the workplace

  • Right to participate in keeping the workplace safe

  • Right to supervise other workers

  • Right to refuse unsafe work

Explanation

Question 12 of 42

1

The only workers who are not covered by the Occupational Health and Safety Act are transient agricultural laborers.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 42

1

The three principal states of "occupational health" that must be satisfied (ie no departures from well-being) are:

Select one or more of the following:

  • Surveillance

  • Mental

  • Occupational

  • Social

  • Physical

  • Ergonomic

Explanation

Question 14 of 42

1

A biologic reaction that occurs within the lungs due to exposure to toxic hazards can create a breakdown of the walls of the alveoli, resulting in enlarged air spaces within the alveoloar region and decreased lung capacity to effectively diffuse oxygen into the blood. This disease is called:

Select one of the following:

  • Asbestosis

  • Emphysema

  • Silicosis

  • Smoker's lung

  • Bronchitis

Explanation

Question 15 of 42

1

In Ontario, who is responsible for establishing a Joint Health and Safety Committee

Select one of the following:

  • Employer

  • Ministry of Labour

  • Union

  • Worker

Explanation

Question 16 of 42

1

What would be the preferred choice for controlling or removing a noisy air compressor?

Select one of the following:

  • Wear earplugs while operating the compressor

  • Operate the machine remotely with the compressor in the shop

  • Install the compressor in insulated housing away from the shop

Explanation

Question 17 of 42

1

Which of the following is/are not an ergonomic hazard

Select one or more of the following:

  • Lifting heavy objects

  • Slippery floors

  • Poor lighting in a work area

  • Ladder with a broken rung

  • Keyboard at improper height

Explanation

Question 18 of 42

1

Which are not mechanisms of direct entry of toxic substances to the body?

Select one or more of the following:

  • Inhalation

  • Sedimentation

  • Injection

  • Centrifuging

  • Ingestion

Explanation

Question 19 of 42

1

Allergic contact dermatitis is an inflammatory skin disease caused by contact allergens and sensitized skin.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 42

1

What condition is anemia?

Select one of the following:

  • Too many white blood cells

  • Too many red blood cells

  • Too few white blood cells

  • Too few red blood cells

Explanation

Question 21 of 42

1

Long term exposure to low levels of CO can cause what?

Select one of the following:

  • Heart attacks and strokes

  • Drowsiness, headaches, and unconsciousness

  • Liver and kidney damage

  • Lung cancer

Explanation

Question 22 of 42

1

What is the base assumption of animal testing?

Select one of the following:

  • It is more reliable than human testing

  • There is an exposure threshold below which no adverse health effects are observed

  • Rats and mice are more sensitive to chemical hazards than humans

  • Rats and mice are representative of human physiology

Explanation

Question 23 of 42

1

LD50 is the airborne/inhaled concentration that kills 50% of the animal tested

Select one of the following:

  • True
  • False

Explanation

Question 24 of 42

1

A coal mine explosion requires coal dust in the air in order to occur.

Select one of the following:

  • True
  • False

Explanation

Question 25 of 42

1

Where is methane gas likely to be found in a coal mine?

Select one of the following:

  • Near the roof of a chamber

  • Near the floor of a chamber

  • Only if an explosion occurs

  • Nowhere near any chamber

Explanation

Question 26 of 42

1

The W65 Self-Rescuer works in CO gas environments how?

Select one of the following:

  • Filters out CO

  • Provides oxygen

  • Transforms CO into C and O2

  • Transforms CO into CO2

  • Covers nose and mouth from CO exposure

Explanation

Question 27 of 42

1

Why is radon gas dangerous?

Select one or more of the following:

  • Toxic to breath

  • Short lived but energetic progenies

  • Progenies adhere to dust particles that lodge themselves in the lungs

  • Widely present in many homes

Explanation

Question 28 of 42

1

Exposure to UV rays can lead to what?

Select one or more of the following:

  • Baldness

  • Dandruff

  • Cataracts

  • Acne

  • Skin irritation

Explanation

Question 29 of 42

1

Which process would NOT aid evaporative cooling of the body

Select one of the following:

  • Inducing excessive dripping of sweat

  • Reduce body surface area covered by clothing

  • Reduce humidity in the surrounding area

  • Increase the velocity of airflows in the workplace

Explanation

Question 30 of 42

1

Which factor does not contribute to the severity of an arc flash?

Select one of the following:

  • Available current

  • Distance to the electrical source

  • How long to shut off the current

  • Weather

Explanation

Question 31 of 42

1

What is the JHSC not responsible for?

Select one of the following:

  • Hearing concerns of workers and health and safety representatives

  • Making a policies regarding health and safety practices in the workplace

  • Providing a process to identify health and safety issues

  • Making recommendations in regards to health and safety issues

Explanation

Question 32 of 42

1

Ministry of Labour Inspectors do not have the power to do what?

Select one of the following:

  • Inspect workplaces without warning

  • Issue orders to correct dangerous conditions

  • Investigate work refusal complaints

  • Make improvements to company health and safety practices

Explanation

Question 33 of 42

1

Which of the following is not a supervisor responsibilities?

Select one of the following:

  • Informing workers of job hazards or dangers

  • Making sure workers use safety and protective equipment when required

  • Making sure workers follow the law and company safety policy

  • Making sure management has adequate representation of the JHSC

Explanation

Question 34 of 42

1

Select from the dropdown lists to complete the text.

Order the worker refusal process properly:
( Step 1:, Step 2:, Step 3:, Step 4: ) Worker representative from Health and Safety Committee is called
( Step 1:, Step 2:, Step 3:, Step 4: ) Ministry of Labour inspector is called
( Step 1:, Step 2:, Step 3:, Step 4: ) Supervisor investigates safety hazard
( Step 1:, Step 2:, Step 3:, Step 4: ) Work is refused to to a perceived safety hazard

Explanation

Question 35 of 42

1

What are supervisors responsible according to the Internal Responsibility System?

Select one or more of the following:

  • Training workers in OHS

  • Making sure workers follow the law and company safety rules

  • Keeping records of work injuries

  • Telling workers about job hazards

Explanation

Question 36 of 42

1

What is an employer not legally obliged to provide?

Select one or more of the following:

  • Training

  • Health and Safety policy

  • Uniforms

  • Safety guards on machinery

  • Health benefits

Explanation

Question 37 of 42

1

In Ontario, workplaces with less than 20 workers must have a Worker Health and Safety Rep that is selected by the workers.

Select one of the following:

  • True
  • False

Explanation

Question 38 of 42

1

For a due diligence defense, and OHS system must be in place and operating effectively. Which of the following meets the requirements for an effective OHS system?

Select one of the following:

  • Hiring employees who have experience in a particular activity

  • Posting notices of safety rules on the JHSC bulletin board

  • Encouraging employees to work safely

  • Monitoring the workplace to ensure compliance

Explanation

Question 39 of 42

1

The absorption rate of toxic substances through the skin is greater on the forehead than on the abdomen.

Select one of the following:

  • True
  • False

Explanation

Question 40 of 42

1

The TLV-TWA for nuisance dusts in the workplace is 10 mg/m3. What would be the STEV and CEV

Select one of the following:

  • STEV = 10 mg/m3, CEV = 20 mg/m3

  • STEV = 20 mg/m3, CEV = 35 mg/m3

  • STEV = 30 mg/m3, CEV = 50 mg/m3

  • STEV = 40 mg/m3, CEV = 80 mg/m3

Explanation

Question 41 of 42

1

Select from the dropdown lists to complete the text.

Sulphide ores are ( an explosive, a carcinogenic, a toxic, a fibrogenic, a nuisance ) hazard.
Radon gas is ( a carcinogenic, an explosive, a toxic, a nuisance, a fibrogenic ) hazard.
Lead is ( a toxic, a carcinogenic, an explosive, a nuisance, a fibrogenic ) hazard.
Silica is ( a fibrogenic, a toxic, a carcinogenic, a nuisance, an explosive ) hazard.
Limestone is ( a nuisance, a toxic, a fibrogenic, an explosive, a carcinogenic ) hazard.

Explanation

Question 42 of 42

1

A mine drift with ventilation flow of 15 m3/sec and a radon progeny concentration of 0.6 WL. What airflow is required to dilute it to 0.33 WL.

Select one of the following:

  • 5 m3/sex

  • 10.9 m3/sec

  • 20.7 m3/sec

  • 45.3 m3/sec

Explanation

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