Robert W. Dahl, PLS, is a cadastral surveyor for the U.S. Department of the Interior, Bureau of Land Management. Training sessions are planned for the BLM cadastral survey leadership and surveyors, certified federal surveyors and professional land surveyors. To learn more about the BLM’s Cadastral Surveying program, the 2009 edition of the Manual and PLSS training opportunities, visit www.blmsurveymanual.org.