WTH?

The gas drilling industry swears fracking and drilling doesn't cause earthquakes.

Seismic definition:

pertaining to, of the nature of, or caused by an earthquake or vibration of the earth, whether due to natural or artificial causes.

If the "artificial causes" such as gas drilling doesn't cause earthquakes, WHY is the city of North Richland Hills covered in seismic detecting equipment by the gas drilling industry?  

WHO's responsible if your home is damaged by it?

Ask Fort Worth.