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02a0019545;20011205d1995 ekmy0engy01;eng;a z 000yy;r;Studies of stope-scale seismicity in a hard-rock mine. pt.2, characterization of blast and rock burst aftershock sequences;Robert L. Kranz, John P. Coughlin & Selena Billington;[Pittsburgh];U.S. Bureau of Mines;1995;ii, 65 p.;ill;Report of Investigations;U.S. Bureau of Mines;no.9578;2001b;aReport of Investigations ; fU.S. Bureau of Mines ; vno.9578;坚硬岩石矿山采区范围的地震活动性的研究,第2部分--爆破和岩爆的余震序列的特性;a720;Kranz ; Coughlin ; Billington;Robert L. ; John P. ; Selena;101;457215;P;720.66;R29u;v9578 ; r1050.00;a03;b1;cP