Recall reports of underground explosions and USGS censorship. I wonder if the laptop drop sensor/seismometer (sp) network is utilized.
Seemed crazy until I heard an underground thump too some 2 yrs back.
Recall reports of underground explosions and USGS censorship. I wonder if the laptop drop sensor/seismometer (sp) network is utilized.
Seemed crazy until I heard an underground thump too some 2 yrs back.