Barricading & Refuge

Question Answer Notes
Rank from 1 to 4 the following responses during an emergency underground such as a fire or explosion, with 1 being the most desirable: Escape via primary escape; Barricade; Shelter in refuge chamber; Evacuate via secondary escape 1. Evacuate via primary escape; 2. Evacuate via secondary escape; 3. Shelter in refuge chamber; 4. Barricade The principal goal is to get out of the mine. Minor injuries or smoke should not deter evacuation.
Which is not a main purpose of a refuge chamber during an underground emergency? A. To provide a controlled atmospheric environment to sustain life; B. To be a muster point; C. To be the first option during an emergency evacuation; D. To be a point of retrieval of personnel by emergency services C. To be the first option during an emergency evacuation  
Refuges must be positioned so that an employee can reach one within how many minutes of leaving their work area? A. 60; B. 90; C. 10; D. 30 D. 30  
True or false: Telephone or other voice communication must be provided between the surface and refuge chambers, and such systems must be independent of the mine power supply. True  
What emergency response method is designed to be rapidly constructed in emergencies when mine evacuation or access to a refuge chamber is not possible? A. Guarding; B. Blocking; C. Barricading; D. Safe spacing C. Barricading  
What are four items requied in a refuge chamber? Lights; food; water; breathable air; scrubber system; communication; toilet; first aid kit  
What alternative refuge method is used only when miners cannot escape a mine and cannot get to a refuge chamber? Barricading  
In coal mining, what is the most important and life-saving characteristic of a properly constructed barricade? Being air tight  
Which two of the following are requirements for the placement of mine refuge stations in underground coal mines? A. Refuges must be provided within 1000 feet of the working face; B. Refuges must be provided within one hour walking time from the working section; C. Refuges or a safe exit to the surface must be provided within one hour travel time for any outby personnel; D. A refuge must be provided to coincide with every SCSR cache A. Refuges must be provided within 1000 feet of the working face; B. Refuges must be provided within one hour walking time from the working section  
Name two conditions that would cause you to enter a refuge chamber. When you are unable to exit the mine due to injury or physical limitation/condition; When you have exhuasted all other means of escape; When information confirms that escape is not an option  
What two responsibilities do you have concerning refuge chambers at the mine where you are working? To know where they are; To know how to activate them  
Which of the following are additional hazards involved with barricading? A. CO2 may become a problem if you are in the barricade too long; B. There is no way to monitor or purge the barricade; C. Barricades do not offer the protection of refuge chambers; D. All of the above D. All of the above  
True or false: Refuge chambers are required on every surface mine. False  
Which of the following is not a reason to enter a refuge chamber? A. All escape attempts have failed; B. There is a profuse amount of smoke; C. You are physically limited; D. You are severely injured B. There is a profuse amount of smoke