Transcription of BLASTING VIBRATIONS AND .THEIR EFFECTS ON STRUCTURES
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BLASTING VIBRATIONS AND .THEIR EFFECTS ON STRUCTURES
Bulletin 656. BLASTING VIBRATIONS . AND . their EFFECTS ON STRUCTURES . By Harry R. Nicholls, Charles F. Johnson, and Wilbur I. Duvall US Department of Interior Office of Surface Mining Reclamation and Enforcement Kenneth K. Eltschlager Mining/Explosives Engineer 3 Parkway Center Pittsburgh, PA 15220. Phone Fax UNITED STATES DEPARTMENT OF THE INTERIOR. BUREAU OF MINES. CONTENTS. Page Page List of Symboll - - - 'ri law - - - - - - - 52. Abstract - I of charge weight for Chapter introduction I instantaneous blasts 54. _ I of delay interval and meeting - - - - - - - - - 2 number of holea - - - - - - - - U-History - - - - - - - - - - - - - - - 2 of milliaecond . U-General approach to the problem -- -- 5 delayed blaata with instantaneous - -- -- ---~--- ---- 4 blasts ~--- - - --------- 40. Chapter - - ---- 5 as a scaling factor ------ -- it --- - -- - - - -- 5 4.!.1-Experimental procedure - - - - - it ;-~e dynamic response of a 4.
Bulletin 656 BLASTING VIBRATIONS AND .THEIR EFFECTS ON STRUCTURES By Harry R. Nicholls, Charles F. Johnson, and Wilbur I. Duvall US Department of Interior
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