This is a new development. Farmers are hoarding the geological information under their land, in the US. This will make it nearly impossible to extract gas in those areas.
I remember my experience with these giant beauties. The old company sponsored this huge survey all over southern Ontario, and then promptly forgot about it. It was magnificent! It actually hurts to stand beside one of these when they are in full thump, and the seismic waves penetrate almost to the bottom of the crust. However, we ended up paying for some new road resurfacing in some places.