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regularly works within one-half mile from the blast area will be informed of the meaning <br />of the signals through appropriate instructions. Access to the immediate area of the <br />blasting site will be cleared and controlled by qualified mine personnel prior to any blast. <br />Colowyo also maintains signs in accordance with 4.02.6. All areas subject to blasting are <br />fenced for livestock. <br />To protect the public, Colowyo will regulate access to any area possibly subject to <br />flyrock from blasting within the permit area. The mine area will be identified by signs on <br />all access roads restricting entry to unauthorized personnel. Signs identifying the area as <br />a blasting area will describe the warning and all-clear signals. Four series of three short <br />sirens and four series of three long sirens will be sounded before the blast. After <br />checking the blast, the Blasting Foreman will report "all clear" to the barricade crews. <br />This will be followed by a single, long siren. <br />Colowyo will use the explosive equation of 4.08.4 (10)(c)(i) to limit the pounds of <br />explosive per 8ms period, similar to that shown on the Blasting Analysis Map (Map 26). <br />Some previous seismographic measurements were made during blasting operations at <br />Colowyo; the results are set forth in Exhibit 14 -Seismographic Measurements. Although <br />seismographic measurements have been made in the past seismographic records will <br />not be used to demonstrate compliance with maximum peak particle velocities. Colowyo <br />has chosen to continue the use of the -scaled-distance formula in Rule 4.08.4(10) (c) (i) <br />to demonstrate compliance with ground vibration requirements. Information pertaining to <br />blast monitoring equipment is located in Section 4.08.4 of this permit. <br />Additional information concerning the use of explosives is found in Section 4.08. <br />2.05-30 <br />September 24, 2002 <br />RN-04 <br />CF 4.2.3.7.2 <br />