1. Pre-Shift Examination Scenario Continuous Miner Section What you will need to complete this exercise: Pencil and paper to take notes or perform calculations Calculator to calculate air quantity (Quantity = Velocity X Area; Area = Length X Width) Learning Outcomes: Know the locations where a pre-shift examination must be performed. Know what checks must be made at each location during a pre-shift examination. Know what actions should be taken when required checks are made. Know what actions should be taken when observing a hazardous condition. Hazardous conditions may include those relating to: –Guarding –Roof and rib conditions –Gas content –Ventilation –Fire hazards –Dust control –Clean-up Know what items to record in the pre-shift examination report.

2. Pre-Shift Examination Scenario Continuous Miner Section You are the pre-shift examiner at the XYZ mine. You are conducting a pre-shift examination of the mine before the crew begins work at 7:00 a.m. Your pre-shift began at 5:00 a.m. and will be finished at 6:30 a.m. You will call the report outside at 6:35 a.m. You have already conducted the pre-shift exam from the outside to the loading point of the Main West 003 Section. You did not observe any hazards from the outside to the Main West 003 working section loading point. You are now going to conduct a pre-shift examination for the Main West 003 working section. It is Monday morning, and you are the only person in the mine. This mine has been idle over the weekend. The belt is not running.

3. Pre-Shift Examination Scenario Continuous Miner Section This is a continuous miner section. Twelve miners work on this section. The entries average 20 feet wide and 5 1/2 feet high. The ventilation plan calls for: –Air quantity at least 7000 cfm at all working places where coal is being cut, mined, drilled for blasting, or loaded. –Air quantity at least 3000 cfm in working places being bolted. –Air quantity at least 18,500 cfm in the last open crosscut. –Air movement in all other places shall be sufficient to dilute, render harmless and carry away flammable, explosive, noxious and harmful gases, dust, smoke and fumes. The roof control plan calls for: –6 foot bolts on 4 foot centers –Entry widths shall be no more than 20 feet in width

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5. You have traveled to the power center. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

6. Keep notes on the following. –Correct. A visual check reveals no electrical, fire, or housekeeping hazards. Refer to 75.360 (b) –Correct. A check reveals no roof and rib hazards or violations. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.8% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. The air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

7. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by initials, date, and time –Enter the condition in your notes.

8. What actions should you take? –Incorrect. There is no hazard to correct –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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10. You have traveled to the sealed area. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Air velocity check –Air direction check –Air quantity calculation

11. Keep notes on the following. –Correct. A visual check reveals the seal is structurally sound and there is no leakage. Refer to 75.360 (b) and 75.360 (5) –Correct. A check reveals no roof and rib hazards or violations. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.3% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

12. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials. –Enter the condition in your notes

13. What actions should you take? –Incorrect. There is no hazard to correct –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes

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15. You have traveled to a room that has been developed off the # 5 entry. The room has been advanced 22 feet. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

16. Keep notes on the following. –Correct. A check curtain is lying on the floor. Refer to 75.360 (b) and 75.360 (b) (6) (i) –Correct. A visual check reveals no roof and rib hazards or violations. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

17. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

18. What actions should you take? –Correct. Hang the ventilation control. This is not a hazard but a violation of 30 CFR 75.360(b)(6)(i) –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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20. You have traveled to the # 5 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

21. Keep notes on the following. –Correct. A visual check reveals that ventilation controls are in place. Refer to 75.330 (b) (1) and 75.360 (b) –Correct. This working face has been mined but not supported beyond the last row of bolts. There is a warning device on the last row of roof bolts. Refer to 75.208 –Correct. The oxygen content is 20.7% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

22. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

23. What actions should you take? –Incorrect. There is no hazard –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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25. You have traveled to the # 4 working face and crosscut. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

26. Keep notes on the following. –Correct. A visual check reveals that ventilation controls are in place. Refer to 75.330 (b) (1) and 75.360 (b) –Correct. A check reveals there are no roof and rib hazards or violations. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.6% and the methane content is.3%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

27. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

28. What actions should you take? –Incorrect. There is no hazard. The concentration of.3% of methane is not enough to be a hazard. –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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30. You have traveled to the 2nd crosscut outby the # 4 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

31. Keep notes on the following. –Correct. A visual check reveals a portable pump standing in a water hole 8-12 inches deep. The cable to the pump has exposed wiring and is smoking. Refer to 75.360 (b), 75.511 and 75.517 –Correct. A visual check reveals no roof and rib hazards. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

32. What actions should you take? –Leave the pump pumping –Pull the pump out of the water and correct the exposed wires. –Go to the power source, disconnect the power, and danger off the cable. –Certify by date, time, and initials –Enter the condition in your notes

33. What actions should you take? –Incorrect. Leaving the pump pumping could cause a fire –Incorrect. Pulling the pump out of the water without ensuring the power is off could cause an electrocution. –Correct. Go to the power source, disconnect the power, and danger off the electrical receptacle. Refer to 75.363 (a), 75.511 and 75.517. –Correct. Certify by date, time, and initials. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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35. You have traveled to the belt feeder. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

36. Keep notes on the following. –Correct. A visual check reveals coal spillage 6-8 inches under the tailpiece and around the tail roller. A guard to the tail piece is lying on the floor. Refer to 75.400 and 75.1722 (b) –Correct. A check reveals no roof or rib hazards. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.6% and the methane content is 0 %. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

37. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by initials, date, and time –Enter the condition in your notes

38. What actions should you take? –Incorrect. There is no one to help you install the guard and clean up the spillage. –Correct. Danger off the area. Refer to 75.363 (a), 75.400 and 75.1722 (b) –Correct. Initial, date, and time. Refer to 75.363 (e) –Correct. Enter the condition in your notes.

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40. You have traveled up # 3 entry toward the # 3 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity and direction check –Air quantity calculation

41. Keep notes on the following. –Correct. A visual check reveals no obvious hazards. Refer to 75.360 (b) –Correct. As you pass through the check curtain you observe 6 roof bolts sheared off. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.6% and the methane content is 0 %. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

42. What actions should you take? –Correct the hazard or violation –Danger off the area in the crosscut between # 2 and # 3 entries –Danger off the area in the crosscut between # 3 and # 4 entries –Danger off the entry outby the check curtain –Certify by initials, date, and time –Enter the condition in your notes

43. What actions should you take? –Incorrect. There is no one to help you. –Correct. Danger off the area in the crosscut between # 2 and # 3 entries. Refer to 75.360 (b), 75.363 (a), and 75.202 (a) –Correct. Danger off the area in the crosscut between # 3 and # 4 entries. Refer to 75.360 (b), 75.363 (a), and 75.202 (a). –Correct. Danger off the entry outby the check curtain. Refer to 75.360 (b), 75.363 (a), and 75.202 (a). Correct. Initial, date, and time. Refer to 75.360(e) –Correct. Enter the condition in your notes.

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45. You have traveled to the # 3 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

46. Keep notes on the following. –Correct. A visual check reveals that ventilation controls are in place. Refer to 75.330 (b) (1) and 75.360 (b) –Correct. This working face has been mined but not supported beyond the last row of bolts. There is a warning device on the last row of roof bolts. Refer to 75.208 –Correct. The oxygen content is 20.7% and the methane content is.1%. Refer to 75.360 (b ) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

47. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

48. What actions should you take? –Incorrect. There is no hazard –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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50. You have traveled to the # 2 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

51. Keep notes on the following. –Correct. A visual check reveals a ventilation curtain has not been extended to the face. Refer to 75.330 (b) (1) –Correct. A check reveals no roof or rib hazards. Refer to 75.202 (a) and 75.360 (b) – Correct. The oxygen content is 20.7% and the methane content is 1.2%. Refer to 75.323 (b) (1) and 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

52. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

53. What actions should you take? –Correct. You must hang the curtain, and then take another methane reading to ensure that the methane is rendered harmless. Refer to 75.330 (b) (1), 75.323 (b) (1) and 75.360 (b) –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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55. You have traveled to the # 2 entry, 2nd crosscut outby and observed a roof cavity. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

56. Keep notes on the following. –Correct. A visual check reveals no hazards. Refer to 75.360 (b) –Correct. A check reveals the roof cavity has been supported. Refer to 75.360 (b) (8) and 75.202 (a) –Correct. The oxygen content is 20.7% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

57. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

58. What actions should you take? –Incorrect There is no hazard or violation –Incorrect. There is no danger –Correct. Certify by date, time, and initials. Refer to 75.360 (e) –Correct. Enter the condition in your notes

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60. You have traveled to the battery charging station. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

61. Keep notes on the following. –Correct. A visual check reveals a fire extinguisher is missing. Refer to 75.1100-2 (e) –Correct. A check reveals no roof or rib hazards or other hazard. Refer to 75.202 (a) and 75.360 (b) – The oxygen content is 20.7% and the methane content is.2%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

62. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

63. What actions should you take? –Correct. Replace the fire extinguisher. Refer to 75.1100-2 (e) –Incorrect. There is no danger –Correct. Certify by date, time, and initials. Refer to 75.360 (e) –Correct. Enter the condition in your notes

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65. You have traveled to the emergency supply car. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

66. Keep notes on the following. –Correct. A check of the SCSR storage container reveals there are 10 SCSRs in the car. There are 12 miners scheduled to work on this section. Refer to 75.1714-4 (a) (1) –Correct. A check reveals no roof or rib hazards or other hazards. Refer 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is 0%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

67. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

68. What actions should you take? –Incorrect You are unable to supply the missing SCSRs. –Incorrect. There is no immediate danger –Correct. Certify by date, time, and initials. Refer to 75.360 (e) –Correct. Enter the condition in your notes. The missing SCSRs must be replaced before the miners begin work. Refer to 75.1714-4 (a) (1)

69. You need to determine the air volume in the last open crosscut. Look at the map and determine where you should take your air readings? –A –B –C

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71. Where you should take your air readings? – Incorrect. A – Incorrect. B – Correct. C Refer to 75.360 (c) (1)

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73. You have traveled to the last open crosscut. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

74. Keep notes on the following. –Correct. A visual check reveals no obvious hazards. Refer to 75.360 (b) –Correct. A check reveals no roof or rib hazards. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is.1%. Refer to 75.360 (b) –Correct. The air velocity is 210 feet per minute. You measured the area and the area measured 5 feet high and 20 feet wide. Refer to 75.360 (c) (1) –Correct. The air is flowing in the proper direction. Refer to 75.360 (b)

75. What is the air quantity for this area? –2100 cfm –21,500 cfm –21,000 cfm

76. What is the air quantity of the area? –Incorrect. 2100 cfm –Incorrect. 21,500 cfm –Correct. 21,000 cfm. Refer to 75.360 (c) (1)

77. What actions should you take? –Correct the hazard or violation –Danger off the area –Certify by date, time, and initials. Refer to 75.360 (e) –Enter the condition in your notes

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79. You have traveled to the # 1 working face. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

80. Keep notes on the following. –Correct. A visual check reveals that ventilation controls are in place. Refer to 75.330 (b) (1) and 75.360 (b) –Correct. A check reveals no roof or rib hazards. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is.2%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

81. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials –Enter the condition in your notes

82. What actions should you take? –Incorrect. There are no hazards or violations. –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes.

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84. You have traveled down # 1 entry. What checks for hazards or violations should you make at this location? (Select as many tools as applicable) –Visual check –Roof and rib check –Oxygen and methane check –Air velocity check –Air direction check –Air quantity calculation

85. Keep notes on the following. –Correct. A visual check reveals that ventilation controls are in place. Refer to 75.330 (b) (1) and 75.360 (b) –Correct. A check reveals no roof or rib hazards. Refer to 75.202 (a) and 75.360 (b) –Correct. The oxygen content is 20.7% and the methane content is.2%. Refer to 75.360 (b) –Incorrect. An air velocity measure is not required at this location. –Correct. The air is flowing in the proper direction. Refer to 75.360 (b) –Incorrect. An air quantity measure is not required at this location.

86. What actions should you take? –Correct the hazard –Danger off the area –Certify by date, time, and initials. –Enter the condition in your notes

87. What actions should you take? –Incorrect. There is no hazard. –Incorrect. There is no reason to danger off the area. –Correct. Initial, date, and time. Refer to 75.360 (e) –Correct. Enter the condition in your notes

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89. You have traveled to the mine phone, you will now call your pre-shift examination report outside to be recorded in the pre-shift record book. James Miner, the mine foreman, received the call and will record the results. Print the pre-shift report and (using your notes) record the hazards and other information required to be recorded in the record book. When you travel to the surface you will sign the pre-shift record book. Refer to 75.360 (3) (f)