JamBuster Jam Mitigation Coring System from Baker Hughes, Inc. Produce quality core samples while reducing coring costs The Baker Hughes JamBuster™ jam mitigation coring system incorporates telescoping inner core barrel sleeves into the HT series™ heavy-duty core barrels to eliminate the effects of core jamming. Concentric inner core barrel sleeves automatically telescope if a core becomes jammed in the core barrel, allowing coring to continue without interruption. | Drilling Foreman