Ski Areas The Chalmers Agency is the exclusive agency in Maine representing Willis, a leader in North America for insuring ski areas, and their MountainGuard Program. We have the privilege to work with some of the top ski areas and ski clubs throughout Maine, and provide a comprehensive insurance policy to meet each ski area's unique needs. The Chalmers Agency has the knowledge and experience to serve your ski area. From loss control to engineering to lift inspections and claims experience, working with Chalmers and Willis gives each ski area owner the opportunity to have an agency with a hands-on approach. Please visit Willis’ MountainGuard website at www.mountainguard.com to learn more about the program, or contact Jim Chalmers at the Chalmers Agency.