EFFECT OF GATE INSTALLATION 



ON CONTINUED USE BY BATS 



OF FOUR ABANDONED MINE WORKINGS 



IN WESTERN MONTANA 



December 1999 



° 1999 Montana Natural Heritage Program 



State Library Building, P.O. Box 201800, 1515 East Sixth Avenue. Helena, MT 59620-1800. 406-444-3009 



This document should be cited as follows: 



Hendricks, P. 1999. Effect of gate installation on continued use by bats of tour abandoned mine workings in western 

 Montana. Unpublished report to Montana Department of Environmental Quality. Montana Natural Heritage Program. 

 Helena. 13 pp. 



