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			If there is no field clock, timing usually falls on the LJ in any game with 4 or more officials.  In a 3 man game it is usually the U.  Your organization could handle it differently though. so you should check with them. 
 
I think that the NFHS rule book states that a 4 minute warning is to be given in the event of no working field clock.  This is only to be an officials timeout, rather than an actual timeout.
		 
		
		
		
		
		
		
		
		
	
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