• I V  
; · UNITED STATES DEPARTMENT; OF THE INTERIOR  
; I HAROLD L. Iexns, Secretary  
  BUREAU OF Mmus  
if I R. R. SAvmzs, Director .
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Ei I COAL MINERS` SAFETY MANUAL xi
  A Handbook for Minucrs  
  By  
l " ]. ]. FORBES. M. j. ANKENY  
  and FRANCIS FEEHAN g
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