A crane operator and a construction worker were killed Tuesday when a 6,500-pound beam came crashing down at a Queens construction site, authorities said. A preliminary investigation determined that the incident, which took place shortly after 12 p.m. in the Briarwood neighborhood, was the result of a “material failure” with the crane, said Rick Chandler, commissioner of the New York City Department of Buildings. The rigging system used to hoist the beam snapped, causing it to fall four stories, he said. It appears that the cause was a failure of the Crane’s rigging system. There have been a number of Crane Accidents at New York City Construction Sites this year. Our Crane Accident Lawyers are representing victims in several of these accidents. See prior blog. Read more in New York Times.