Explosives, Corrosives, Poisons, and Radiological Materials. The storing, retaining, handling, using, dispensing, or transporting of any Class A explosive or hazardous material (as defined by the “Hazardous Material Regulation of the U.S. Department of Transportation”) requires a Special Use permit authorized by the Airport Director and issued by the fire marshal under COMAR 29.06.01. Detonators such as blasting caps, electric blasting caps, and detonating primers shall be stored in a separate magazine for blasting supplies and may not be stored in a magazine with other explosive materials. Detonators shall be stored in a Type 1, 2, or 3 magazine, except that electrical blasting caps having leg wires at least 4 feet long may be stored in a Type 4 magazine. Whenever specific types of magazines are required by COMAR 29.06.01, magazines of higher classifications may be permitted to be substituted. Explosive materials that are bullet-sensitive shall be stored in a Type 1, 2, or 3 magazine. Explosive materials that are not cap-sensitive shall be stored in a Type 4 or 5 magazine. Magazines shall be in the charge of a competent person at all times who shall be at least 21 years old or a member of the Armed Services, and who shall be held responsible for the enforcement of all safety precautions. Magazine doors shall be kept locked, except during the time of placement and removal of stocks of explosives or during inspection. Safety rules governing the operation of magazines shall be posted on the interior of the magazine door. Smoking, carrying lighted matches, open flames, spark-producing devices, and firearms (except firearms carried by authorized guards) are prohibited inside or within 50 feet of magazines. The land surrounding magazines shall be kept clear of brush, dried grass, leaves, and similar combustibles for a distance of at least 25 feet. Combustible materials may not be stored within 50 feet of magazines. Aircraft involved in loading, unloading, reloading, or temporarily retaining Class A explosives or blasting agents shall be parked on the Airport in areas designated by the Administration. Class B and C explosives shall be handled in the same manner when compliance is considered necessary by the Administration to ensure public safety. Explosive cargo shall be transported to and from the designated parking areas in vehicles equipped in accordance with federal regulations. A carrier of explosive cargo shall notify the Administration at least 12 hours before the scheduled arrival of the aircraft involved. The Administration will then issue the appropriate NOTAMs. Carriers of explosive cargo shall notify the Administration immediately upon arrival of explosives at the Airport and shall also notify a consignee or handling agent who shall remove the explosive cargo from the Airport within 48 hours of notification. Clothes Lockers. Only metal clothes lockers may be used.