Load_holder is experiment_queue.tray, not .load_holder
Load_holder is experiment_queue.tray, not .load_holder

NMGRL/pychron,UManPychron/pychron,USGSDenverPychron/pychron,NMGRL/pychron,USGSDenverPychron/pychron,USGSDenverPychron/pychron,UManPychron/pychron,UManPychron/pychron,UManPychron/pychron,NMGRL/pychron,NMGRL/pychron,USGSDenverPychron/pychron