EXPLOSIVES, BLASTING SAFETY, AND
REGULATIONS: COMPREHENSIVE MINING AND
CONSTRUCTION GUIDE QUESTIONS WITH 100%
CORRECT ANSWERS
Which type of explosive is most likely to be cap-sensitive and requires careful handling? A)
ANFO B) Dynamite C) Emulsion explosive D) Slurry explosive
Answer: B
What is the primary difference between detonation and deflagration? A) Detonation
involves subsonic combustion, deflagration involves supersonic shock waves B) Detonation
involves supersonic shock waves, deflagration involves subsonic combustion C) Detonation
occurs only in liquid explosives, deflagration only in solids D) Detonation is slower than
deflagration
Answer: B
Which property of an explosive directly influences its ability to produce a high velocity of
detonation (VOD)? A) Density B) Water resistance C) Sensitivity D) Power factor
Answer: A
When selecting an explosive for a hard, massive rock formation requiring minimal
fragmentation, which property is most critical? A) Low detonation velocity B) High
strength and velocity of detonation C) Low water resistance D) High fumes production
B) High strength and velocity of detonation
Which of the following is a key consideration when handling explosives in cold
temperatures? A) Increased sensitivity of the explosive B) Reduced sensitivity and potential
for misfire C) No change in explosive characteristics D) Explosives become water-resistant
in cold
B) Reduced sensitivity and potential for misfire
What is a primary benefit of using emulsion explosives in blasting operations? A) They are
highly cap-sensitive B) They are water-resistant and suitable for wet conditions C) They
produce minimal fumes D) They are the least sensitive explosive available
B) They are water-resistant and suitable for wet conditions
Which regulation primarily governs the transportation of explosives within the United
States? A) OSHA regulations B) DOT regulations C) MSHA regulations D) EPA
regulations
B) DOT regulations
, Which magazine type is most suitable for storing large quantities of explosives in a secure
outdoor environment? A) Type 1 (Type A) magazine B) Type 3 (Type B) magazine C) Type
4 (Type C) magazine D) Type 5 (Type D) magazine
A) Type 1 (Type A) magazine
According to the American Table of Distances, what is the minimum separation distance
for a magazine storing more than 1,000 pounds of explosives from a public highway? A)
300 feet B) 500 feet C) 1,000 feet D) 1,500 feet
C) 1,000 feet
Which circuit configuration of electric blasting caps is most suitable for firing multiple
charges simultaneously? A) Series circuit B) Parallel circuit C) Series-in-parallel circuit D)
Parallel-in-series circuit
B) Parallel circuit
Which initiation system uses a shock tube to transmit the detonation wave? A) Electric
detonators B) Shock tube systems C) Non-electric delay detonators D) Fuses
B) Shock tube systems
What is the primary purpose of priming and booster charges? A) To delay the blast B) To
initiate the main explosive charge reliably C) To prevent misfires D) To reduce noise
during blasting
B) To initiate the main explosive charge reliably
Which type of blasting machine is most commonly used for field operations? A) Electric
blasting machine with dry cell batteries B) Pneumatic blasting machine C) Hydraulic
blasting machine D) Mechanical detonator loader
A) Electric blasting machine with dry cell batteries
How does increasing the delay interval between blasts affect ground vibrations? A) It
amplifies vibrations B) It reduces peak particle velocity (PPV) and vibrations C) It has no
effect on vibrations D) It causes unpredictable vibrations
B) It reduces peak particle velocity (PPV) and vibrations
Which geologic characteristic most influences blast hole design? A) Soil moisture content
B) Rock strength and discontinuities C) Vegetation cover D) Air temperature
B) Rock strength and discontinuities
What is the typical shape used in pattern design for blasting to optimize fragmentation and
minimize flyrock? A) Circular pattern B) Square or rectangular pattern C) Random
pattern D) Triangular pattern
B) Square or rectangular pattern
REGULATIONS: COMPREHENSIVE MINING AND
CONSTRUCTION GUIDE QUESTIONS WITH 100%
CORRECT ANSWERS
Which type of explosive is most likely to be cap-sensitive and requires careful handling? A)
ANFO B) Dynamite C) Emulsion explosive D) Slurry explosive
Answer: B
What is the primary difference between detonation and deflagration? A) Detonation
involves subsonic combustion, deflagration involves supersonic shock waves B) Detonation
involves supersonic shock waves, deflagration involves subsonic combustion C) Detonation
occurs only in liquid explosives, deflagration only in solids D) Detonation is slower than
deflagration
Answer: B
Which property of an explosive directly influences its ability to produce a high velocity of
detonation (VOD)? A) Density B) Water resistance C) Sensitivity D) Power factor
Answer: A
When selecting an explosive for a hard, massive rock formation requiring minimal
fragmentation, which property is most critical? A) Low detonation velocity B) High
strength and velocity of detonation C) Low water resistance D) High fumes production
B) High strength and velocity of detonation
Which of the following is a key consideration when handling explosives in cold
temperatures? A) Increased sensitivity of the explosive B) Reduced sensitivity and potential
for misfire C) No change in explosive characteristics D) Explosives become water-resistant
in cold
B) Reduced sensitivity and potential for misfire
What is a primary benefit of using emulsion explosives in blasting operations? A) They are
highly cap-sensitive B) They are water-resistant and suitable for wet conditions C) They
produce minimal fumes D) They are the least sensitive explosive available
B) They are water-resistant and suitable for wet conditions
Which regulation primarily governs the transportation of explosives within the United
States? A) OSHA regulations B) DOT regulations C) MSHA regulations D) EPA
regulations
B) DOT regulations
, Which magazine type is most suitable for storing large quantities of explosives in a secure
outdoor environment? A) Type 1 (Type A) magazine B) Type 3 (Type B) magazine C) Type
4 (Type C) magazine D) Type 5 (Type D) magazine
A) Type 1 (Type A) magazine
According to the American Table of Distances, what is the minimum separation distance
for a magazine storing more than 1,000 pounds of explosives from a public highway? A)
300 feet B) 500 feet C) 1,000 feet D) 1,500 feet
C) 1,000 feet
Which circuit configuration of electric blasting caps is most suitable for firing multiple
charges simultaneously? A) Series circuit B) Parallel circuit C) Series-in-parallel circuit D)
Parallel-in-series circuit
B) Parallel circuit
Which initiation system uses a shock tube to transmit the detonation wave? A) Electric
detonators B) Shock tube systems C) Non-electric delay detonators D) Fuses
B) Shock tube systems
What is the primary purpose of priming and booster charges? A) To delay the blast B) To
initiate the main explosive charge reliably C) To prevent misfires D) To reduce noise
during blasting
B) To initiate the main explosive charge reliably
Which type of blasting machine is most commonly used for field operations? A) Electric
blasting machine with dry cell batteries B) Pneumatic blasting machine C) Hydraulic
blasting machine D) Mechanical detonator loader
A) Electric blasting machine with dry cell batteries
How does increasing the delay interval between blasts affect ground vibrations? A) It
amplifies vibrations B) It reduces peak particle velocity (PPV) and vibrations C) It has no
effect on vibrations D) It causes unpredictable vibrations
B) It reduces peak particle velocity (PPV) and vibrations
Which geologic characteristic most influences blast hole design? A) Soil moisture content
B) Rock strength and discontinuities C) Vegetation cover D) Air temperature
B) Rock strength and discontinuities
What is the typical shape used in pattern design for blasting to optimize fragmentation and
minimize flyrock? A) Circular pattern B) Square or rectangular pattern C) Random
pattern D) Triangular pattern
B) Square or rectangular pattern
