Game Guides Archive

I just logged in to find that I had a factory that I must have forgotten to put maintenance into. It had already been destroyed. When I checked my emails I had gotten my 1st warning at 1:00 AM Thursdays saying it was at 27%. The next email was from Friday at 1:00 AM saying it was at 0%. So I ran and checked now (Saturday morning) and it was gone, along with the over 3 million units of resources inside.

I know I have received far more warning than this for houses and harvs. Can someone tell me if this is standard for factories? It certainly doesn't seem like enough warning for me.