Nine new spud wrenches feature large openings (9/16 to 2 in.) and conical rather than flat handles that taper to a point at the end. The handle lets workers align bolts, rivets, and flange holes.

Dennis Milton, an ironworker with Local 580 in New York City who helped build the World Trade Center, practices throwing a spud wrench Saturday at the first Oneida Nation Ironworkers Festival in ...