Yes, these look like TechnoAlpin low energy tower guns. Basically a newer, efficient version of a York Snow Borax tower gun like you see on paradise, razors edge etc. I haven't been to blue in over 10 years, but back then they still had the old air/water style guns on Burma. Those were a combination of home made, omichron's on towers, and some really old spraying systems style guns when they dabbled in the snowmaking business back in the late 60's/early 70's.
The advantage to these new guns are they are much more efficient in air consumption. Depending what they bought, you could probably run 7-10 new ones to one old gun. Most of the TechnoAplin towers usually have a built in compressor too so they don't have to pump air up the mountain. These guns are very easy to automate, basically right off the hydrants themselves. Snow quality will be much better as well.