Mine Rescue Statements VIII
In order to get 100%, you must answer all of the following correctly.
1. A partially opened mine door can be use as a regulator.



2. The specific gravity of normal air is _________.





3. For exploration, if at all possible, entry into the mine should be made:





4. A regulator can be made by knocking blocks out of a permanent bulkhead.



5. After an explosion has occurred, the hazards a team might encounter are:





6. The explosive range and flammability of ethane in normal air is:





7. A pitot tube is used to measure the direction and velocity of slow moving air.



8. Dinner buckets encountered during exploration are important because:





9. ____________________ is a mixture of carbon dioxide, nitrogen, and air.





10. A smoke tube is a device that emits a smoke cloud which floats along with the air current to show the direction of the airflow and the approximate velocity.




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