(b) The auxiliary facilities shall be—

1. (1) Constructed of nonsparking material on the inside when used for the storage of explosives;
2. (2) Kept clean, suitably dry, and orderly;
3. (3) Kept in repair;
4. (4) Located out of the line of blasts so they will not be subjected to damaging shock or flyrock;
5. (5) Identified with warning signs or coded to indicate the contents with markings visible from any approach;
6. (6) Located at least 15 feet from all haulageways and electrical equipment, or placed entirely within a mined-out recess in the rib used exclusively for explosive material;
7. (7) Filled with no more than a one-week supply of explosive material;
8. (8) Separated by at least 25 feet from other facilities used to store detonators; and
9. (9) Kept securely locked unless all access to the mine is either locked or attended.