11. What length of time is an individual miner given to notify the operator in writing that he has obtained any additional mining certification (shot firer, belt examiner, mine foreman ...) ?

12. How must all manually operated valves and levers on equipment of the same manufacturer and model activate and operate?

13. What must be used to tow disabled underground rubber-tired mining equipment in all areas of the mine outby working sections?

14. How many years of practical underground mining experience is required to qualify for an assistant mine foreman-fireboss certificate?

15. Who is permitted to conduct the required daily inspection of hoisting machinery at shaft mines?

16. At what intervals must stop and start controls be installed on belt conveyors that do not transport miners?

17. When may shelter holes be located on the trolley and feeder wire side?

18. Who must directly supervise the handling of a misfired shot?

19. What safety device is required for methane detectors on each working section other than longwall sections and sections mined solely by continuous mining machines with integral roof bolters?

20. When may the director require modifications to an existing comprehensive mine safety program?