'Never forget': examining changes in materiality and preservation practices at the National September 11 Memorial & Museum, New York.

The National September 11 Memorial & Museum commemorates specific traumatic moments in history—the February 26, 1993 bombing of the World Trade Center in New York and the catastrophic attacks of September 11, 2001. The recovered realia, exhibiting damage from the attacks, consists of many objects never intended to be preserved. Now 20 years later, the plastics, newspapers and corroded metals which served as placeholders connecting us with both the past and the innocent lives lost are beginning to age. In addition, the people who care for these artefacts may no longer have personal associations with the trauma; that is, the lived experience of the events which motivated the original caretakers. This paper discusses the current research conducted by museum staff related to how the conservation community navigates our own experiences, memories and evolving biases in interpreting trauma collections and how a human-centred approach of involving family members and survivors defines conservation priorities for objects meant to stay frozen in time. [ABSTRACT FROM AUTHOR]