[Code of Federal Regulations] [Title 50, Volume 5] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 50CFR27.92] [Page 163] TITLE 50--WILDLIFE AND FISHERIES CHAPTER I--UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR--(Continued) PART 27_PROHIBITED ACTS--Table of Contents Subpart I_Other Disturbing Violations Sec. 27.92 Private structures. No person shall without proper authority construct, install, occupy, or maintain any building, log boom, pier, dock, fence, wall, pile, anchorage, or other structure or obstruction in any national wildlife refuge.