When I lived in Keene, NH, the university had one. Seems they were only brought in when the snow piles got to the point that there was no more room for the future coming snows. Some people called them dragons. Basically a giant diesel powered jacuzzi. The EPA no longer allow the snow to be dumped in rivers or snow storage in areas that may run off into a water way. In Boston, there was a snow storage lot that the news would report on when the last of the snow finally melted. If I recall correctly, it was typically in June sometime. Basically always ends up being just a giant trash pile. The shear volume of snow could be could be impressive at times......that's why I moved South.