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| Level | Blast casting result | Assignment | Fragmentation distribution | Muck pile shape | Boulder generation | Destruction degree of coal seam bench | Dust pollution |
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| I | Poor | 1 | Fragmentation distribution is extremely unreasonable | Muck pile is loose and shape is unreasonable | Too much boulder is generated and secondary crushing should be done | Coal seam is extremely damaged | Extremely high dust concentration and extremely serious pollution |
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| II | General | 2 | Fragmentation distribution basically meets the requirements | Muck pile shape basically meets the requirements | Too much boulder is generated | Coal seam is seriously damaged | High dust concentration and serious pollution |
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| III | Well | 3 | Fragmentation distribution is reasonable | Muck pile is relatively concentrated | Less boulder is generated and individual needs crushing properly | Coal seam is basically well preserved | Low dust concentration and moderate pollution |
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| IV | Very well | 4 | Fragmentation distribution is fairly uniform | Muck pile is concentrated, and the shape reasonable | Boulder is not generated | Coal seam is intact and undamaged | Lower dust concentration and light pollution |
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