1. Roof Control
Jeopardy

4. Roof Control Jeopardy Final Jeopardy
Dimensions CM
Bolts
General
Unbolted
Cuts
Hodge
Podge
100
200
300
400
500

5. Dimensions for 100
Our maximum approved entry and crosscut width is feet.
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6. Dimensions for 200
Our approved roof control plan is approved for depths of cover of up to feet.
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7. Dimensions for 300
When mining approaches within feet of an outcrop, approaches a burn line, or approaches a known fault … the plan shall be supplemented with additional support.
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8. Dimensions for 400
Our minimum and maximum approved entry and crosscut centers are feet and feet.
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9. Dimensions for 500
Where subnormal roof conditions are encountered, indicated, or anticipated, cuts will be
At least one foot cut shall be taken after roof conditions have improved and the roof evaluated by the mine foreman or section foreman, before extended cuts are resumed.
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10. CM for 100
Our maximum approved cut depth is feet.
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11. CM for 200
Personnel shall be positioned in areas that are free of created by moving mining equipment.
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12. CM for 300
In the event of a breakdown of the continuous mining machine inby permanent roof support, the unsupported area shall be to the extent possible.
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13. CM for 400
A on the continuous miner shall be determined to indicate when the maximum approved cut depth has been reached.
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14. CM for 500
When using temporary supports to reach a continuous mining machine that has broken down inby permanent roof supports, the temporary supports shall be installed on foot centers prior to starting work. These supports shall extend a minimum of inby the point at which work is to be performed.
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15. Bolts for 100
The minimum roofbolt length approved in our roof control plan is inches.
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16. Bolts for 200
The minimum roofbolt steel grade approved in our roof control plan is ksi.
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17. Bolts for 300
Hole diameters will be from inch to inch larger than bolt diameters.
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18. Bolts for 400 Holes for a 7’ roofbolt should be drilled to inches.
Holes for an 8’ truss anchor bolt should be drilled to inches.
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19. Bolts for 500
Test holes will be drilled either during, or immediately after, the installation of the
at the beginning of each
in each , and at intervals of feet thereafter.
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20. General for 100 If tunnel liners are to be used a - will be submitted.
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21. General for 200
A working face shall not be mined through into an unsupported area of active workings, except when the unsupported area is .
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22. General for 300
Ribs shall be or supported by other means to ensure stability when a hazard exists.
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23. General for 400
During mining and place changing, all personnel shall be positioned outby the , under supported roof.
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24. General for 500
Mine personnel shall not proceed during face cutting operations.
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25. Unbolted Cuts for 100
Roof support shall begin within hours after mining occurs, subject to availability of power, equipment and personnel.
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26. Unbolted Cuts for 200
Temporary supports will not be used except when isolated mining conditions prevents deployment.
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27. Unbolted Cuts for 300
Should it become necessary to leave a cut unbolted for days or more, the place shall be properly
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28. Unbolted Cuts for 400
No cuts will be left unbolted over or any other period of days or more, subject to availability of power, equipment and personnel.
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29. Unbolted Cuts for 500
When side cuts or breakthroughs are made from or into a previously bolted entry, no work or travel, except required examinations in or inby the intersection is permitted until:
a)      the side cut is supported with at least one row of , or
b)     the side cut contains a single row of , installed on foot centers, or
c) the roof bolter is placed firmly against the roof.
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30. Hodge Podge for 100
Test holes shall be drilled to a depth of at least inches above the anchorage horizon of the roofbolts being used.
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31. Hodge Podge for 200
Resin grouted rods and other types of roof bolts shall not be interspersed in the pattern of installation unless they are used as .
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32. Hodge Podge for 300
Resin packages shall be protected from excessive or during storage, and shall not be used if the shelf life is exceeded.
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33. Hodge Podge for 400 Additional roof support shall be installed where:
1) the width of the opening specified in the roof control plan is exceeded by more than __ inches; and
2) the distance over which the excessive width exists is more than feet.
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34. Hodge Podge for 500
Some roofbolt resin is marked with 3248M0510 on the label. What does this mean, and is this anchor resin or grout resin? 32 48 M
0510
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35. Final Jeopardy Category
Methane Tests

36. Final Jeopardy Question
A qualified person shall make tests for methane:
i) in each working place before electrically operated equipment is energized; and
ii) equipment is energized, taken into, or operated in a working place; and
iii) At intervals, or more often if required in the approved ventilation plan at specific location, during the operation of equipment in the workplace.

37. The End
Pretty Good Huh?