Except as provided in subparagraph (B), all documents and information prepared or received by or specifically for the Board, and deliberations of the Board and its employees and agents, in connection with an inspection under section
7214 of this title or with an investigation under this section, shall be confidential and privileged as an evidentiary matter (and shall not be subject to civil discovery or other legal process) in any proceeding in any Federal or State court or administrative agency, and shall be exempt from disclosure, in the hands of an agency or establishment of the Federal Government, under the Freedom of Information Act (
5 U.S.C.
552a), or otherwise, unless and until presented in connection with a public proceeding or released in accordance with subsection (c) of this section.