MINE EXPLOSIVES SAFETY AND
CERTIFICATION REGULATIONS EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
What are the requirements for certification as a shotfirer? - ANS A person must be under the
direction and within sight and sound of a certified shotfirer, complete a training program, and
pass a test.
What does the shotfirer's test include? - ANS It includes testing for mine gases and safely
handling and detonating explosives.
What is required for certification as a shotfirer and driller for solid blasting? -
ANS Completion of a training program and passing a test, along with one year of practical
underground coal mine experience.
What materials must containers for explosives be made of when transported underground? -
ANS Containers must be constructed of nonconductive material, maintained in good
condition, and kept closed.
How can explosives be transported underground? - ANS Using a battery-powered scoop in a
specially designed container.
What must be done to separate explosives and detonators in containers? - ANS They must be
separated by a four-inch partition.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What was the cause of the fatality at Ash Trucking Company? - ANS The accident occurred
due to improper handling, transportation, and storage of explosives.
What is the minimum distance explosives and detonators must be stored from roadways and
power wires? - ANS At least twenty-five feet.
What is the maximum supply of explosives or detonators that can be stored underground in one
section? - ANS Not more than a forty-eight hour supply.
What is required for transporting explosives and detonators on belts? - ANS They must be in
original unopened cases or suitable individual containers.
What should be done if explosives and detonators are transported in the same container? -
ANS They must be separated by at least a four-inch substantially fastened hardwood
partition.
What is the requirement for transporting explosives and detonators with men? -
ANS Explosives and detonators shall not be transported on the same trip with men.
What is the required distance for storing explosives from the working face? - ANS At least
fifty feet from the face and fifteen feet from any pipeline, powerline, rail, or conveyor.
What type of explosives can be used underground? - ANS Only 'permissible' explosives.
How far apart should explosives and detonators be stored if kept in the same box? -
ANS They should be separated by at least a four-inch partition.
What conditions must be met for transporting explosives underground by belt? -
ANS Clearance requirements must be the same as those for transporting men, and suitable
loading/unloading stations must be provided.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What should be done with explosives stored near working faces? - ANS They should be in
separate closed containers and out of line of blast.
What is the requirement for the construction of section boxes or magazines for explosives? -
ANS They must have no metal exposed on the inside.
What should be done if explosives are stored in the same section? - ANS They should be kept
preferably in separate boxes or magazines not less than five feet apart.
What is the minimum distance explosives and detonators must be stored apart? - ANS At
least ten feet.
What should be done with explosives and detonators during transportation? - ANS They
should be transported in special trips not connected to any other trip.
What is the requirement for transporting explosives in special substantial covered containers? -
ANS They must not be transported on flight or shaking conveyors, scrapers, or any self-
propelled mobile equipment.
What is the requirement for loading and unloading explosives and detonators? - ANS An
attendant must supervise the loading and unloading.
What is the requirement for transporting explosives or detonators before or after a man trip? -
ANS They shall not be hauled into or out of a mine within five minutes preceding or following
a man trip.
What is the requirement for transporting explosives in cars moved by a locomotive or rope? -
ANS They must be in substantial covered cars or special containers.
What is the requirement for the bodies and covers of cars transporting explosives? -
ANS They shall be constructed or lined with nonconductive material.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CERTIFICATION REGULATIONS EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
What are the requirements for certification as a shotfirer? - ANS A person must be under the
direction and within sight and sound of a certified shotfirer, complete a training program, and
pass a test.
What does the shotfirer's test include? - ANS It includes testing for mine gases and safely
handling and detonating explosives.
What is required for certification as a shotfirer and driller for solid blasting? -
ANS Completion of a training program and passing a test, along with one year of practical
underground coal mine experience.
What materials must containers for explosives be made of when transported underground? -
ANS Containers must be constructed of nonconductive material, maintained in good
condition, and kept closed.
How can explosives be transported underground? - ANS Using a battery-powered scoop in a
specially designed container.
What must be done to separate explosives and detonators in containers? - ANS They must be
separated by a four-inch partition.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,What was the cause of the fatality at Ash Trucking Company? - ANS The accident occurred
due to improper handling, transportation, and storage of explosives.
What is the minimum distance explosives and detonators must be stored from roadways and
power wires? - ANS At least twenty-five feet.
What is the maximum supply of explosives or detonators that can be stored underground in one
section? - ANS Not more than a forty-eight hour supply.
What is required for transporting explosives and detonators on belts? - ANS They must be in
original unopened cases or suitable individual containers.
What should be done if explosives and detonators are transported in the same container? -
ANS They must be separated by at least a four-inch substantially fastened hardwood
partition.
What is the requirement for transporting explosives and detonators with men? -
ANS Explosives and detonators shall not be transported on the same trip with men.
What is the required distance for storing explosives from the working face? - ANS At least
fifty feet from the face and fifteen feet from any pipeline, powerline, rail, or conveyor.
What type of explosives can be used underground? - ANS Only 'permissible' explosives.
How far apart should explosives and detonators be stored if kept in the same box? -
ANS They should be separated by at least a four-inch partition.
What conditions must be met for transporting explosives underground by belt? -
ANS Clearance requirements must be the same as those for transporting men, and suitable
loading/unloading stations must be provided.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What should be done with explosives stored near working faces? - ANS They should be in
separate closed containers and out of line of blast.
What is the requirement for the construction of section boxes or magazines for explosives? -
ANS They must have no metal exposed on the inside.
What should be done if explosives are stored in the same section? - ANS They should be kept
preferably in separate boxes or magazines not less than five feet apart.
What is the minimum distance explosives and detonators must be stored apart? - ANS At
least ten feet.
What should be done with explosives and detonators during transportation? - ANS They
should be transported in special trips not connected to any other trip.
What is the requirement for transporting explosives in special substantial covered containers? -
ANS They must not be transported on flight or shaking conveyors, scrapers, or any self-
propelled mobile equipment.
What is the requirement for loading and unloading explosives and detonators? - ANS An
attendant must supervise the loading and unloading.
What is the requirement for transporting explosives or detonators before or after a man trip? -
ANS They shall not be hauled into or out of a mine within five minutes preceding or following
a man trip.
What is the requirement for transporting explosives in cars moved by a locomotive or rope? -
ANS They must be in substantial covered cars or special containers.
What is the requirement for the bodies and covers of cars transporting explosives? -
ANS They shall be constructed or lined with nonconductive material.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
