Employees William Heck, Fabrication Supervisor Paul Bailey, Project Manager Ron Leaverton, Vice President Darcie Numan, Controller David Lawrenz, Field Superintendent Gary Vincent, President Fred R. Witte, Founder Betty Hintz, Contract Management Jackson Witte, CEO Employee Directory (619)469-6181 Jackson R. Witte Chairman / CEO / Secretary / Treasurer Ext. 104 Gary J. Vincent President Ext. 103 Ronald A. Leaverton Vice President Ext. 107 Paul R. Bailey Project Manager Ext. 112 Darcie M. Numan Controller Ext. 105 Betty L. Hintz Contract Administrator Ext. 100 Dave C. Lawrenz Field Superintendent Ext. 201 William W. Heck Supervisor of Fabrication Shop Ext. 205 John D. Kriner Field Superintendent Ext. 200