One of my customers is into mining business. The place where mining is done is in extreme weather conditions and dusty too. Due to this, there are frequent equipment failure rate. Is there any way to prepare Cisco infrastructure from issues such as power surge/ power fluctuations, sudden disruption of power etc. I do understand there are power surges/ UPS solutions available, however does Cisco recommend any solution for their devices working under such conditions? Also what are the technologies that work well for WAN under such circumstances. Any suggestions will be highly appreciated. Thank you.