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<br /> <br />(1) Establish a drill bench on the overburden. ~ <br />(2) Drill blasting pattern. <br />(3) Load drill holes with explosives. <br />(4) Blast overburden. <br />(5) Remove blasted overburden with shovel, front-end <br />loader, or dragline. <br />(6) Clean coal seam. <br />(7) Drill blasting pattern. <br />(8) Load drill holes with exglosives. <br />(9) Blast coal seam. <br />(10) Remove blasted coal with front-end loaders. <br />Colowyo will comply with all applicable state and federal laws in <br />its use of explosives. All blasting operations are conducted by <br />experienced, trained, certified and competent persons. <br />Because of the inherent complexities of the Colowyo mining <br />operation, the surface blasting program has keen developed to <br />conform with a variety of coal seams and the diverse overburden <br />handling techniques. The coal blasting will vary from coal seam to <br />coal seam because of the different thicknesses encountered. Three <br />general types of overburden blasting will be required: one for the <br />truck/shovel operation, one for the dragline operation, and one for <br />blast casting operations. <br />The number of blast holes per delay for overburden and coal is <br />reflected on Blasting Pattern Alteration -Overburden, (Map 26) and <br />Blasting Pattern Alteration - Coal (Map 27). Approximate blasting <br />patterns for coal and overburden are shown in Table 5, Blasting <br />Parameters - Overburden, and Table 6, Blasting Parameters - Coal. <br />2.05-28 <br />