|1||1979 - 03/27/1979 - Use of air on the pushover ram to clean standpipes is an acceptable practice; Filtered air is required for operating cabs; Request for variance on requirements for filtered air for standby wharf pulpi|
|2||1979 - 03/06/1979 - Use of air on the pushover ram to clean standpipes is an acceptable practice; Standpipes should be cleaned if 20% of the cross sectional area is clocked.|
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