A gathering of geologists, planners, aggregate operators, and others sparks interesting dialogue on geology and mining. I recently attended the 48th Forum on the Geology of Industrial Minerals, hosted by the Arizona Geological Survey. This has always been one of my ...
A trip to the repair shop leads to insights on geologic formations and thermal expansion valves. By Bill Langer This morning, I got up bright and early and took our 2004 mini-van to a little repair shop in North Phoenix — the ...
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