Hi all. I am looking for biodegradable and respectful storage solution for NAGPRA assemblages that will still meet collection management standards for preservation. I had the thought to sew custom pouches with unbleached muslin for burial storage but haven't been able to find anything concrete on how long the muslin will preserve in storage. I may just use tyvek but would love any input on the longevity of muslin or other non plastic materials that have worked for others. Thank you for any responses!