Staff reporter for the Seattle Times A construction company owner and a worker were identified Wednesday afternoon as the two people killed in a ditch collapse that occurred Monday as they attempted to replace a damaged sewer connection in Shoreline. David Ameh, 66, and Demetrius Sellers, 32, died of asphyxiation during the collapse, the King County Coroner’s Office said. Ameh owns Peacefield Construction, which is based just south of Seattle and started in 2012, according to business license records. The state Department of Labor and Industries will investigate the incident, a process that usually takes six months. The bodies of Ameh and Sellers were recovered early Wednesday by the Shoreline Fire Department and partners who used hand tools, a vacuum hose and protective metal boxes to reach them on unstable ground. Half a dozen relatives kept vigil nearby and saw the bodies in medical vehicles, the fire department said. The site was located in the 600 block of Northwest 163rd Street, where the private side sewer and nearby public main sewer run along a wooded hillside.