Doral Constable;50;of Mercer R.D.3;was killed at work at the Detsel Construction Co.in Youngstown;Ohio;on Friday;May 2;1958;at 4:30 p.m.  He was a heavy equipment operator.  His wife;Mrs.Barbara Gido Constable;was a former Monessen resident.  Other survivors are four brothers-in-law;Joseph and Steve Gido of Monessen;Ted of New York and Mike of Richmond;Va.    Friends are being received at the Edwin Melenyzer Funeral Home;262 Donner Ave.;Monessen.  Funeral services will be held Tuesday;May 6;1958;at 3 p.m.from the funeral home;with the Rev.Lester Crum of the Evangelical United Brethern Church;Monessen;officiating.  Interment will be in Belle Vernon Cemetery. Edwin Melenyzer;funeral director.