Bolts at center of Big Dig collapse case
http://news.yahoo.com/s/ap/20061231/ap_on_re_us/big_dig
http://news.yahoo.com/s/ap/20061231/ap_on_re_us/big_dig
No, it comes down to the hundreds of bolts, each weighing less than a pound, that were glued into the concrete tunnel roof to hold up the 4,600-pound concrete ceiling panels.
That's the focus of legal wrangling over the death of a woman killed when several panels collapsed one night.
A review of records and interviews with investigators by The Associated Press has found that:
_The bolts, about 5/8 of an inch in diameter and 6 to 8 inches long, according to various sources, had not been inspected since the tunnel opened to traffic in January 2003.