The mine was idle, the outside communications employee noticed he lost power at the #7 mine. EE went in to see what happened and found a roof fall at x-cut #16 spad (8+90). The fall was 8' high x 20'long x 25'wide. EE called the fall in at 1:38 A.M., we then cribbed around the affected area and then started re cable bolting the affected area.