I was at work on evening shift at a coal plant located at Winifrede hollow road. It was 2200 at night. The plant was down and there was no noises anywhere.Me and 9 other guys had just finished doing pipe repair and were standing outside leaning against trucks.One of the guys pointed up and said what is that.We all looked up an saw a triangle shaped object outlined in white lights the size of a football field coming up the hollow from SW [Beckley, WV area].It might have been 300 to 500 ft above us. It was moving very slow and made no noise.We watched for about 3 or 4 minutes as it disappeared over the trees. A few minutes latter another one showed up behind it, the same shape and size and no noise. Another one showed up after that, same as before. After these 3 went by a small object with lots of red flashing appeared at the end of the line formation.They were all headed NW towards Charleston, WV.What was strange about the objects was that there was no noises whatsoever, to be as close as they were,and their sizes. All of this took place in 15 minutes.