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notified by phone of the approximate time at which the blast is to occur. Upon detonation of the blast and after the appropriate time, the blast is inspected for misfires and to be sure that the area is safe to be entered by personnel and equipment so that mining can proceed. An all clear signal consisting of along blast on a horn is used. In addition, in accordance with Performance Standards 4.02.5, GEC Minerals also maintains signs which indicate that the area is one in which explosives are used. A sign indicating the described signals prior to blasting and after blasting are shown at the entrance of the mine. GEC Minerals, Inc. publishes a blasting schedule like the one shown in Exhibit 2, Blasting Schedule, on a monthly basis. GEC Minerals, Inc. has implemented pre-blast surveys for all structures within 1/2 mile of the mine area where requested. • Copies of the pre-blast survey are located in Exhibit 3. GEC Minerals, Inc. regulates the access to all areas which could be subject to fly rock from the blasting area. The general mine area is identified by signs and all access roads have restricted entry. Only authorized personnel are allowed on the property. Signs identify the area as a blasting area and describe the appropriate warning and all clear signals. Prior to the blast, access to the blast area is closed off and the area of the blast is cleared of all equipment and personnel. In addition, all access is guarded prior to detonation of the blastholes. GEC Minerals, Inc. currently uses the explosive equation of Performance Standards 4.08.4 (10) (b) (ii) to limit the number of blastholes per delay in such that the peak particle velocity of 1" per second is not exceeded. Atypical amount of holes which commonly would be detonated per 8 milisecond delay is shown in Table 2.05-5, Blasting Parameters, Overburden. 2.05-18