Lynn Campbell is currently a Guest Scholar (September–December 2012) at the Getty Conservation Institute.
Lynn writes:
Off to New Orleans and San Francisco in the near future to talk to them about disaster preparedness but thought I would just show you what the Getty does in its libraries and offices.
The bar lifts up to retrieve a book and goes down again when not being used.
Update [13 Nov 2012]
Also from Lynn, a link to a free PDF on disaster planning from the Getty:
Building an Emergency Plan: A Guide for Museums and Other Cultural Institutions