reython Construction forms Greython Earthworks. Greython Earthworks will perform site work, excavation, and demolition throughout the Northeast. Stephen O’Rourke, has joined Greython Construction to lead this division. Stephen has extensive experience in the field and formally owned and operated O’Rourke Excavation Service or EOS. Greython Construction is proud to welcome Greython Earthworks and Stephen O’Rourke as a partner to our team.