2. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 1 #BHP Roof Control Jeopardy

3. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 2 #BHP

4. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 3 #BHP

5. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 4 #BHP Roof Control Jeopardy Final Jeopardy Final Jeopardy DimensionsCMBoltsGeneral Unbolted Cuts Hodge Podge 100 200 300 400 500

6. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 5 #BHP Dimensions for 100 Our maximum approved entry and crosscut width is feet. Return

7. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 6 #BHP Dimensions for 200 Our approved roof control plan is approved for depths of cover of up to feet. Return

8. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 7 #BHP 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. Return

9. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 8 #BHP Dimensions for 400 Our minimum and maximum approved entry and crosscut centers are feet and feet. Return

10. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 9 #BHP 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. Return

11. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 10 #BHP CM for 100 Our maximum approved cut depth is feet. Return

12. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 11 #BHP CM for 200 Personnel shall be positioned in areas that are free of created by moving mining equipment. Return

13. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 12 #BHP 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. Return

14. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 13 #BHP CM for 400 A on the continuous miner shall be determined to indicate when the maximum approved cut depth has been reached. Return

15. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 14 #BHP 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. Return

16. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 15 #BHP Bolts for 100 The minimum roofbolt length approved in our roof control plan is inches. Return

17. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 16 #BHP Bolts for 200 The minimum roofbolt steel grade approved in our roof control plan is ksi. Return

18. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 17 #BHP Bolts for 300 Hole diameters will be from inch to inch larger than bolt diameters. Return

19. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 18 #BHP 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. Return

20. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 19 #BHP 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. Return

21. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 20 #BHP General for 100 If tunnel liners are to be used a - will be submitted. Return

22. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 21 #BHP General for 200 A working face shall not be mined through into an unsupported area of active workings, except when the unsupported area is. Return

23. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 22 #BHP General for 300 Ribs shall be or supported by other means to ensure stability when a hazard exists. Return

24. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 23 #BHP General for 400 During mining and place changing, all personnel shall be positioned outby the, under supported roof. Return

25. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 24 #BHP General for 500 Mine personnel shall not proceed during face cutting operations. Return

26. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 25 #BHP Unbolted Cuts for 100 Roof support shall begin within hours after mining occurs, subject to availability of power, equipment and personnel. Return

27. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 26 #BHP Unbolted Cuts for 200 Temporary supports will not be used except when isolated mining conditions prevents deployment. Return

28. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 27 #BHP Unbolted Cuts for 300 Should it become necessary to leave a cut unbolted for days or more, the place shall be properly. Return

29. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 28 #BHP 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. Return

30. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 29 #BHP 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. Return

31. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 30 #BHP 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. Return

32. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 31 #BHP 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. Return

33. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 32 #BHP 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. Return

34. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 33 #BHP 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. Return

35. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 34 #BHP 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 Return

36. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 35 #BHP Final Jeopardy Category Methane Tests

37. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 36 #BHP 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.

38. Date - 01/02/2003 San Juan Coal Company Thermal Coal Customer Sector Group 37 #BHP The End Pretty Good Huh?