» 
UNITED STATES DEPARTMENT OF AGRICULTURE 
~~ 
BULLETIN No. 379 ¢, « 
Contribution from the Bureau of Chemistry, CARL L. ALSBERG, Chi fs and the 
Office of Public Roads and Rural Engineering, LOGAN ee pane es SA fa an \- 
Bas 
GO ig 
Bi 
Washington, D.C. 
DUST EXPLOSIONS AND FIRES IN 
GRAIN SEPARATORS IN THE 
PACIFIC NORTHWEST 
By 
DAVID 7 PRICE, Engineer in Charge of Grain Dust Explosion Investi- 
gations, Bureau of Chemistry, and E. B. McCORMICK, Chief, 
Division of Rural Engineering, Office of Public 
Roads and Rural Engineering 
CONTENTS 
Page 
Introduction Experimental Field and Laboratory Work 11 _ 
Plan of Investigation Nature of Dust Explosions 
Classification of Explosions Methods Developed for Preventing Ex- 
Results of Field Investigation . . plosions or Extinguishing Fires 
Static Electricity as a Cause of Ealociois Special Acknowledgments 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
a 1916 
