Amendment to Department Order No. 57, s. 1991, on Rotation/Reassignment of Key Officials-DPWH Filed Offices. Category: Department OrderSub Category: areas-responsibilities-authority-designationSeries: 1993No: 89File: DO_089_S1993.pdfDate: Wednesday, April 21, 1993Tags: Amendment DO 57 Rotation Reassignment Key Officials areas 089 Read more about Amendment to Department Order No. 57, s. 1991, on Rotation/Reassignment of Key Officials-DPWH Filed Offices.