UPDATE: Mines Help Center (https://helpcenter.mines.edu) is up again. You may have to clear your browser cache to make it work.
Here’s info for clearing your web cache: https://it.mines.edu/clear-cache/

There have been some delays in our switchover of URLs for Mines Help Center (a.k.a. helpdesk.mines.edu, helpcenter.mines.edu, etc). We are working with the vendor on the problem and will keep you posted.