How about the back cover feature called "What in the World?"?
Well, guess what this is:
Anyone guess mineral-rich subterranean water?
Yep, that's a product of the geo-thermal drilling.
On Friday, two of the 6 geothermal wells were drilled. Each is 6" in diameter (or thereabouts) and dives 200 feet below the surface. During drilling, water and rock were encountered. At first, I assumed that the grey sludge around the tube was concrete poured around it. That's the fine residue from drilling through the rock, however.
Once all 6 are drilling and in place, some sort of geothermal grout will be poured into the PVC tubing to fill the space around the conduit/piping that's inside the pvc. Then the PVC will be yanked out, and the geothermal well will be in place. In theory, someone will haul off the sludge at some point too.
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