Boston.com reports that Attorney General Martha Coakley will soon announce the indictment of Powers Fastener, a New York based glue manufacturer. Powers Fastener allegedly supplied the low-creep resistant adhesive that the Big Dig used to "affix" ceiling panels to the I-90 Connector Tunnel's interior. The indictment will charge the glue company with criminal negligence in the death of Milena Del Valle, who was killed when the tunnel's ceiling fell onto her car last year.