FORT WORTH, Texas, Jan. 4 /PRNewswire-FirstCall/ -- Union Drilling, Inc. (Nasdaq: UDRL) announced today that it will be participating in three upcoming investor conferences.

By Toal, Brian A Once small, regional land drillers. Union Drilling Inc. and Pioneer Drilling Co. have grown their fleets, footprints and fortunes. After the 1979-81 oil boom went bust, a lot of U.S. kind drillers slacked their iron and headed for bankruptcy hearings.