00715cam a22002171  4500001001300000003000400013005001700017008004100034010001700075035001900092040004900111042001200160050002200172110008000194245008900274260002300363300002800386650002500414650004100439999001700480l  24000126 DLC20260227111529.0820104s1924    pau           000 0 eng c  al  24000126   a(OCoLC)8035896  aU.S. Dept. of Labor. LibrarycVidOCoLCdDLC  apremarc00aHD7269b.M61 U6452 aPennsylvania Compensation Rating and Inspection Bureau.bCoal Mine Section.10aStatistical analysis of coal mine accidents in Pennsylvania, 1916 to 1922 inclusive.  aHarrisburgc[1924]  a140 p.bdiagrs.c24 cm. 0aCoal mine accidents. 0aCoal mines and miningzPennsylvania.  c35740d35740